Year	% of total
1994	95
1995	100
1999	92
2000	97.3
2001	96.6
2002	99.2
2003	98.2
2004	94
2005	96.6
2006	96.8
2007	96.7
2008	96.7
2009	96.7
2010	96.8
2011	96.7
2012	96.8
2013	96.7
2014	96.7
2015	96.3
2016	96.5
2017	96.6
2018	96.4
2019	96.5