Year	% of population
1990	100
1991	100
1992	100
1993	100
1994	100
1995	99.9978762557224
1996	99.9603304516303
1997	99.9552239950787
1998	99.9585935808613
1999	99.8727543092158
2000	99.9388058789684
2001	99.9422315141576
2002	99.947196113157
2003	99.9570539804406
2004	99.9453155374429
2005	99.9333092765487
2006	99.9466411603689
2007	99.9340105743136
2008	99.9444145134978
2009	99.9602288679159
2010	99.9529244184389
2011	99.9644047263591
2012	99.9747610959561
2013	99.9869992510124
2014	99.9897032090772
2015	99.9964833508549
2016	99.9988978639664
2017	99.9932082191319