Year	%
1986	40.2201365187713
1987	40.4844402730375
1988	42.0456382252559
1989	42.3920238907849
1990	44.569656996587
1991	46.4206040955631
1992	36.7193430034129
1993	35.2763430034129
1994	39.8573344709897
1995	42.0760085324232
1996	41.3618959044368
1997	33.7102201365188
1998	41.6048583617747
1999	29.4258003412969
2000	18.7866666666667
2001	20.72
2002	16.3267983308288
2003	15.187101145088
2004	15.0830567168883
2005	14.5608333333333
2006	12.893913084832
2007	15.3818501011015
2008	17.1756231436697
2009	13.0080746033842
2010	9.38148993683401
2011	11.2199184470583
2012	12.5850402049247
2013	10.9855861710036
2014	10.8673350376127
2015	11.4499872575296
2016	14.6454318106769
2017	13.6858303184817
2018	12.1148777449182
2019	11.7690653821827
2020	9.85052425129014
2021	9.3378484091001
2022	15.8075088706303
2023	21.0306368304862