Year	% of total
1989	42.1
1994	47.2
1998	56.7
2000	67.3
2002	65.1
2003	60.8
2004	60.8
2008	71.1
2011	84
2012	82.1
2013	84.2
2014	83.9
2015	88.8
2016	89.8
2017	99.5
2018	71.5
2019	81.1