Estonia became the 34th OECD member country on December 9, 2010, upon completion of necessary formalities including parliamentary approval. For more information on OECD member countries, accession and enhanced engagement, please visit the organization's web site at www.oecd.org.

Estonia's membership affects the composition of the following Data Buffet geo codes. Time series using, for example, the "OECD Total" aggregate geo code (IOCTT) may or may not be comparable over time. In most instances the OECD will recalculate the history of regional aggregates to include new member countries, but this is not guaranteed.

OECD member countries as of end-2010 (34):

Accession candidate countries (1):

• Russia

Enhanced engagement countries (5):

• Brazil
• China
• India
• Indonesia
• South Africa