Year	% of population
1990	0
1991	0
1992	0
1993	0
1994	0.34845391
1995	0.659530909
1996	1.356106888
1997	2.344571647
1998	4.50128419
1999	8.497176323
2000	16.11312704
2001	25.38022753
2002	31.19229426
2003	33.71668179
2004	36.16178784
2005	38.55987756
2006	43.851443
2007	46.15047362
2008	48.41870215
2009	50.64202838
2010	54.04
2011	57.7
2012	61.53415931
2013	65.4
2014	69.27
2015	73.13999995
2016	77.00999989
2017	80.50546556