<div class="floatright">
{| cellpadding=2 cellspacing=0
|<timeline>
ImageSize = width:300 height:140
PlotArea = left:50 bottom:20 top:10 right:0
AlignBars = late
Period = from:0 till:510
TimeAxis = orientation:vertical
Colors =
id:gray value:gray(0.5)
id:line1 value:gray(0.9)
id:line2 value:gray(0.7)
ScaleMajor = unit:year increment:100 start:0 gridcolor:line2
ScaleMinor = unit:year increment:50 start:0 gridcolor:line1
BarData =
bar:1958 text:est._1958
bar:1973 text:1973
bar:1981 text:1981
bar:1986 text:1986
bar:1995 text:1995
bar:2004 text:2004
bar:2007 text:2007
bar:2013 text:2013
Define $broad = width:30 shift:(-5,0)
PlotData=
color:tan1 $broad
bar:1973 from:start till:192.457 text:192
bar:1981 from:start till:261.743 text:262
bar:1986 from:start till:273.399 text:273
bar:1995 from:start till:350.909 text:351
bar:2004 from:start till:381.782 text:382
bar:2007 from:start till:464.206 text:464
bar:2013 from:start till:503.492 text:503
color:brightgreen $broad
bar:1958 from:start till:169.107 text:+169
bar:1973 from:192.457 till:256.762061 text:+64
bar:1981 from:261.743 till:271.47235 text:+9
bar:1986 from:273.399 till:322.013967 text:+49
bar:1995 from:350.909 till:372.938977 text:+22
bar:2004 from:381.782 till:456.504685 text:+75
bar:2007 from:464.206 till:494.296977 text:+30
bar:2013 from:503.492 till:506.777111 text:+4
TextData =
pos:(5,5) textcolor:gray fontsize:S text:Mil.
</timeline>
|-
| align="left" style="font-size:85%" | Chart of the population development of<br />the EU affiliated with the enlargement process.
|}
</div>
This is a sequence of tables giving statistical data for past and future enlargements of the European Union. All data refer to the populations, land areas, and gross domestic products (GDP) of the respective countries at the time of their accession to the European Union, illustrating historically accurate changes to the Union. The GDP figures are at purchasing power parity, in United States dollar at 1990 prices.
Past enlargements
Foundation
200px|thumb|The EC6 in 1957
{| class="wikitable" style="text-align:right;"
|-
! Member countries
! Population
! Area (km<sup>2</sup>)
! GDP <br />(billion US$)
! GDP <br />per capita (US$)
|-
| style="text-align:left;" |
| 9,052,707
| 30,528
| 58.316
| $46,878
|-
| style="text-align:left;" | <sup></sup>
| 44,788,852
| 674,843
| 312.966
| $40,690
|-
| style="text-align:left;" | <sup></sup>
| 54,292,038
| 248,717
| 400.554
| $41,168
|-
| style="text-align:left;" |
| 49,476,000
| 301,336
| 265.192
| $30,116
|-
| style="text-align:left;" |
| 310,291
| 2,586
| 2.938
| $113,533
|-
| style="text-align:left;" |
| 11,186,847
| 41,526
| 83.351
| $50,355
|-
! EC6 (1958)
! 169,106,736
! 1,299,536
! 1,123.317
! 6,643
|}
1973 enlargement
200px|thumb|The EC9 in 1973
{| class="wikitable" style="text-align:right;"
|-
! Member countries
! Population
! Area (km<sup>2</sup>)
! GDP <br />(billion US$)
! GDP <br />per capita (US$)
|-
| style="text-align:left;" | <sup></sup>
| 5,021,861
| 43,094
| 70.032
| $59,928
|-
| style="text-align:left;" |
| 3,073,200
| 70,273
| 21.103
| $39,638
|-
| style="text-align:left;" |
| 56,210,000
| 244,820
| 675.941
| $36,728
|-
! Accession countries
! 64,305,061
! 358,187
! 767.076
! 11,929
|-
! Existing members (1973)
! 192,457,106
! 1,299,536
! 2,381,396
! 12,374
|-
! EC9 (1973)
! 256,762,167 <br /> (+33.41%)
! 1,657,723 <br /> (+25.44%)
! 3,148.472 <br /> (+32.21%)
! 12,262 <br /> (−0.91%)
|}
1981 enlargement
200px|thumb|The EC10 in 1981
{| class="wikitable" style="text-align:right;"
|-
! Member countries
! Population
! Area (km<sup>2</sup>)
! GDP <br />(billion US$)
! GDP <br />per capita (US$)
|-
| style="text-align:left;" |
| 9,729,350
| 131,945
| 86.553
| 8,896
|-
! Existing members (1981)
! 261,743,191
! 1,657,723
! 3,694,558
! 14,115
|-
! EC10 (1981)
! 271,472,541 <br /> (+3.72%)
! 1,789,668 <br /> (+7.96%)
! 3,781.111 <br /> (+2.34%)
! 13,928 <br /> (−1.33%)
|}
1986 enlargement
200px|thumb|The EC12 in 1986
{| class="wikitable" style="text-align:right;"
|-
! Member countries
! Population
! Area (km<sup>2</sup>)
! GDP <br />(billion US$)
! GDP <br />per capita (US$)
|-
| style="text-align:left;" |
| 9,907,411
| 92,391
| 85.610
| 8,641
|-
| style="text-align:left;" |
| 38,707,556
| 504,782
| 386.998
| 9,998
|-
! Accession countries
! 48,614,967
! 597,173
! 472.608
! 9,721
|-
! Existing members (1986)
! 273,398,552
! 1,789,668
! 4,186.176
! 15,312
|-
! EC12 (1986) <br />EU12 (1993)
! 322,013,519 <br /> (+17.78%)
! 2,386,841 <br /> (+33.37%)
! 4,658.784 <br /> (+11.29%)
! 14,468 <br /> (−5.51%)
|}
1990 enlargement
200px|thumb|The EC12 in 1990
{| class="wikitable" style="text-align:right;"
|-
! Member countries
! Population
! Area (km2)
! GDP <br />(billion US$)
! GDP <br />per capita (US$)
|-
| style="text-align:left;" |
| 16,111,000
| 108,333
| 159.5
| 9,800
|-
! Existing members (1986)
! 322,013,519
! 2,386,841
! 4,658.784
! 14,468
|}
1995 enlargement
200px|thumb|The EU15 in 1995
{| class="wikitable" style="text-align:right;"
|-
! Member countries
! Population
! Area (km<sup>2</sup>)
! GDP <br />(billion US$)
! GDP <br />per capita (US$)
|-
| style="text-align:left;" |
| 8,206,524
| 83,871
| 145.238
| 18,048
|-
| style="text-align:left;" |
| 5,261,008
| 338,145
| 80.955
| 15,859
|-
| style="text-align:left;" |
| 9,047,752
| 449,964
| 156.640
| 17,644
|-
! Accession countries
! 22,515,284
! 871,980
! 382.833
! 17,378
|-
! Existing members (1995)
! 350,909,402
! 2,495,174
! 5,894.232
! 16,797
|-
! EU15 (1995)
! 373,424,686 <br /> (+6.4%)
! 3,367,154 <br /> (+34.95%)
! 6,277.065 <br /> (+6.50%)
! 16,831 <br /> (+0.20%)
|}
2004 enlargement
200px|thumb|The EU25 in 2004
{| class="wikitable" style="text-align:right;"
|-
! Member countries
! Population
! Area (km<sup>2</sup>)
! GDP <br />(billion US$)
! GDP <br />per capita (US$)
|-
| style="text-align:left;" | <sup></sup>
| 775,927
| 9,250
| 11.681
| 15,054
|-
| style="text-align:left;" |
| 10,246,178
| 78,866
| 105.248
| 10,272
|-
| style="text-align:left;" |
| 1,341,664
| 45,226
| 22.384
| 16,684
|-
| style="text-align:left;" |
| 10,032,375
| 93,030
| 102,183
| 10,185
|-
| style="text-align:left;" |
| 2,306,306
| 64,589
| 24.826
| 10,764
|-
| style="text-align:left;" |
| 3,607,899
| 65,200
| 31.971
| 8,861
|-
| style="text-align:left;" |
| 396,851
| 316
| 5.097
| 12,843
|-
| style="text-align:left;" |
| 38,580,445
| 311,904
| 316.438
| 8,202
|-
| style="text-align:left;" |
| 5,423,567
| 49,036
| 42.800
| 7,810
|-
| style="text-align:left;" |
| 2,011,473
| 20,273
| 29.633
| 14,732
|-
! Accession countries
! 74,722,685
! 737,690
! 685.123
! 9,169
|-
! Existing members (2004)
! 381,781,620
! 3,367,154
! 7,711.871
! 20,200
|-
! EU25 (2004)
! 456,504,305 <br /> (+19.57%)
! 4,104,844 <br /> (+17.97%)
! 8,396,994 <br /> (+8.88%)
! 18,394 <br /> (−8.94%)
|}
2007 enlargement
200px|thumb|The EU27 in 2007
<!--
Figures not necessarily from 2007. Check against source when updated for 2007 data.
-->
{| class="wikitable" style="text-align:right;"
|-
! Member countries
! Population
! Area (km<sup>2</sup>)
! GDP <br />(billion US$)
! GDP <br />per capita (US$)
|-
| style="text-align:left;" |
| 7,761,000
| 111,002
| 62.29
| 8,026
|-
| style="text-align:left;" |
| 22,329,977
| 238,391
| 204.4
| 9,153
|-
! Accession countries
! 30,090,977
! 349,393
! 266.69
! 8,863
|-
! Existing members (2007)
! 464,205,901
! 4,104,844
! 12,170.11
! 26,217
|-
! EU27 (2007)
! 494,296,878 <br /> (+6.48%)
! 4,454,237 <br /> (+8.51%)
! 12,436.80 <br /> (+2.04%)
! 25,160.59 <br /> (−4.03%)
|}
2013 enlargement
200px|thumb|The EU28 in 2013
<!--
Figures not necessarily from 2007. Check against source when updated for 2007 data.
-->
{| class="wikitable" style="text-align:right;"
|-
! Member countries
! Population
! Area (km<sup>2</sup>)
! GDP <br />(billion US$)
! GDP <br />per capita (US$)
|-
| style="text-align:left;" |
| 4,290,612
| 56,594
| 80.983
| 18,338
|-
! Existing members (2013)
! 503,492,041
! 4,454,237
! 15,821.00
! 31,607
|-
! EU28 (2013)
! 506,777,111 <br/>(+0.85%)
! 4,510,831 <br/>(+1.31%)
! 15,868.983 <br/>(+0.51%)
! 31,313.54 <br/>(−0.74%)
|}
UK withdrawal
200px|thumb|The EU27 in 2020
Candidate countries
[[File:EU Balkan enlargement.svg|350px|thumb|