Year	Percent
1993	1.30942
1994	1.91427
1995	2.05737
1996	1.85145
1997	1.79131
1998	1.90089
1999	1.86149
2000	1.59353
2001	1.43167
2002	1.17937
2003	0.82962
2004	0.74937
2005	0.75275
2006	0.64019
2007	0.64014
2008	0.63233
2009	0.61711
2010	0.58751
2011	0.59062
2012	0.58495
2013	0.58336
2014	0.58199
2015	0.57865
2016	0.57446
2017	0.58093
2018	0.5772
2019	0.5836
2020	0.66364