Year	Percent
1995	25.75345
1996	25.46925
1997	27.88724
1998	28.16436
1999	27.71652
2000	27.02638
2001	27.11039
2002	26.69926
2003	26.14705
2004	26.54704
2005	26.94937
2006	27.06601
2007	26.62782
2008	25.70332
2009	25.07759
2010	25.32596
2011	25.40062
2012	25.26301
2013	25.17691
2014	25.80437
2015	26.63304
2016	25.78438
2017	26.44114