Year	Percent
1990	24.083
1991	24.061
1992	24.167
1993	24.263
1994	24.241
1995	24.481
1996	24.48
1997	24.708
1998	24.85
1999	25.066
2000	25.252
2001	25.383
2002	24.872
2003	26.17
2004	26.721
2005	26.669
2006	26.32
2007	26.035
2008	25.718
2009	25.653
2010	25.597
2011	25.54
2012	24.796
2013	24.991
2014	25.022
2015	25.021
2016	25.027
2017	24.964
2018	24.885
2019	24.794
2020	24.694
2021	24.594
2022	24.489
2023	24.377
2024	24.258
2025	24.133
2026	24.012
2027	23.887
2028	23.762
2029	23.641
2030	23.528