Year	Percent
1994	25.85529
1995	25.7
1996	25.7
1997	25.21762
1998	27.43018
1999	24.35686
2000	19.36942
2001	19.06638
2002	17.78066
2003	19.15977
2004	20.5424
2005	21.31931
2006	20.93539
2007	21.68781
2008	23.15068
2009	22.83862
2010	22.39181
2011	22.12586
2012	21.54222
2013	22.23394
2014	22.06478
2015	22.54003
2016	23.16663
2017	23.37208