Why the sudden drop in one year, which seems to represent a change of definitions? That seems to be the case. This is from the same source as these population

Why the sudden drop in one year, which seems to represent a change of definitions? That seems to be the case. This is from the same source as these population figures (Eurostat): http://epp.eurostat.ec.europa.eu/statistics_explained/index.php?title=File:Crude_rates_of_population_change,_2009-2011_(per_1_000_inhabitants).png&filetimestamp=20130129110717 http://epp.eurostat.ec.europa.eu/statistics_explained/index.... In footnote (3) it says emigration figures for Lithuania -- the largest of the Baltics -- are overstated in 2010 and 2011. Those years include emigrants who had left in previous years but hadn't been counted.