Year	%
1989	45.96503
1990	45.11861
1993	44.99149
1995	33.6293
1996	25.27156
1997	47.34266
1998	4.670962
1999	25.8067
2000	4.57586
2001	2.589448
2002	2.866389
2003	2.112557
2004	2.865454
2005	2.891282
2006	2.821017
2007	4.606474
2008	3.681214
2009	4.311398
2010	4.142044
2011	4.275986
2012	4.117678
2013	5.021965
2016	8.971595
2017	10.87695
2018	10.52943
2019	11.18996
2020	11.25101
2021	10.46757