Year	%
1996	49.01432
1997	49.32323
1998	49.32323
1999	41.48304
2000	9.401512
2001	43.68288
2002	45.82848
2003	46.19593
2006	38.87793
2007	43.33563
2010	44.7714
2011	36.75565
2012	35.83931
2013	41.08882
2015	51.20538
2016	39.23952
2017	35.77573
2020	32.16018