Year	Percent
1990	0.2504
1991	1.2305
1992	1.20846
1993	1.17795
1994	1.43235
1995	2.76745
1996	1.96
1997	2.61036
1998	2.14733
1999	2.06499
2000	2.80239
2001	2.82346
2002	2.77374
2003	2.05098
2004	1.72843
2005	1.67885
2007	1.04834
2008	1.01943
2009	0.99091
2010	0.96282
2011	0.93521
2012	0.91053
2013	0.8881
2014	0.8657
2015	0.84284
2016	0.81951
2017	0.79559
2018	0.86941
2019	0.85665
2020	0.77023