Year	% of population
2000	0.661041379494775
2001	0.596056435597877
2002	0.531377464018981
2003	0.467014522414073
2004	0.402961578967199
2005	0.339229120783049
2006	0.275813673515876
2007	0.212712233781902
2008	0.149929783366468
2009	0.087466334391823
2010	0.0253218884963598
2011	0
2012	0
2013	0
2014	0
2015	0
2016	0
2017	0
2018	0