Year	Percent
2000	92.93672
2001	92.93672
2002	92.79255
2003	92.64838
2004	92.5042
2005	92.36003
2006	92.21586
2007	92.07169
2008	91.92751
2009	91.78334
2010	91.63917
2011	91.495
2012	91.35083
2013	91.20665
2014	91.06248
2015	90.91831
2016	90.77414
2017	90.62996
2018	90.48579
2019	90.34162
2020	90.19745
2021	90.05328
2022	90.05328