Year	Percent
1992	0.73025
1993	1.04588
1994	0.87893
1995	1.22187
1996	1.20526
1997	1.13566
1998	1.11565
1999	1.06976
2000	0.97902
2001	0.88449
2002	0.81357
2003	0.86238
2004	0.7792
2005	0.8793
2006	0.73958
2007	0.85748
2008	0.77017
2009	0.77056
2010	0.79176
2011	0.78023
2012	0.80885
2013	0.79573
2014	0.76254
2015	0.73167
2016	0.73913
2017	0.71092
2018	0.65155
2019	0.6618
2020	0.70281