Year	%
1993	31.78805
1996	10.79311
1997	10.65302
1998	10.79311
1999	10.51075
2000	10.18276
2001	12.2911
2002	10.96081
2003	11.95171
2004	10.9619
2005	10.28736
2006	9.978694
2007	33.7072
2008	33.31356
2009	30.83121
2010	9.658315
2011	30.47128
2012	9.344411
2013	28.20886
2015	24.39481
2016	28.20679
2017	27.23607
2019	7.433143
2020	7.158417
2021	7.171434