Year	Percent
1991	0.013
1992	0.012
1993	0.012
1994	0.011
1995	0.011
1996	0.011
1997	0.008
1998	0.008
1999	0.009
2000	0.009
2001	0
2002	0.015
2003	0.027
2004	0.095
2005	0.056
2006	0
2007	0
2008	0.011
2009	0.011
2010	0.016
2011	0.03
2012	0.033
2013	0.01
2014	0.011
2015	0.01
2016	0.01
2017	0.011
2018	0.01
2019	0.01
2020	0.01
2021	0.01
2022	0.009