Update EU27/28

[rgieseke]

https://ec.europa.eu/eurostat/statistics-explained/index.php/Glossary:EU_enlargements

[rgieseke]

Could have these (From link above):

EU-12 (1 November 1993 - 31 December 1994):

Belgium (BE), Denmark (DK), France (FR), Germany (DE), Greece (EL), Ireland (IE), Italy (IT), Luxembourg (LU), Netherlands (NL), Portugal (PT), Spain (ES) and United Kingdom (UK)

EU-15 (1 January 1995 - 30 April 2004):

EU-12 + Austria (AT), Finland (FI) and Sweden (SE)

EU-25 (1 May 2004 - 31 December 2006):

EU-15 + Cyprus (CY), Czechia (CZ), Estonia (EE), Hungary (HU), Latvia (LV), Lithuania (LT), Malta (MT), Poland (PL), Slovakia (SK) and Slovenia (SI)

EU-27_2007 (1 January 2007 - 30 June 2013):

EU-25 + Bulgaria (BG) and Romania (RO)

EU-28 (from 1 July 2013):

EU-27_2007 + Croatia (HR)

EU-27 (from 1 February 2020):

EU-28 - United Kingdom (UK)