Year	Percent
1990	36.374
1991	36.374
1992	36.374
1993	36.374
1994	36.374
1995	36.374
1996	36.374
1997	36.374
1998	36.374
1999	36.374
2000	36.374
2001	36.374
2002	36.374
2003	36.374
2004	36.374
2005	36.374
2006	36.374
2007	36.374
2008	35.14
2009	37.746
2010	37.341
2011	36.558
2012	35.419
2013	34.949
2014	34.436
2015	34.012
2016	34.022
2017	33.979
2018	33.935
2019	33.891
2020	33.848
2021	33.804
2022	33.76
2023	33.716
2024	33.673
2025	33.629
2026	33.585
2027	33.541
2028	33.498
2029	33.454
2030	33.41