Year	Percent
1990	7.997
1991	8.049
1992	8.091
1993	8.154
1994	8.074
1995	8.025
1996	8.015
1997	7.982
1998	7.9
1999	7.917
2000	7.866
2001	7.826
2002	7.763
2003	7.752
2004	7.714
2005	7.663
2006	7.619
2007	7.539
2008	7.52
2009	7.6
2010	7.579
2011	7.527
2012	7.489
2013	7.462
2014	7.422
2015	7.367
2016	7.343
2017	7.318
2018	7.294
2019	7.27
2020	7.245
2021	7.221
2022	7.196
2023	7.172
2024	7.148
2025	7.123
2026	7.099
2027	7.075
2028	7.05
2029	7.026
2030	7.001