Year	Percent
1990	11.068
1991	11.151
1992	11.124
1993	11.201
1994	11.298
1995	11.318
1996	11.543
1997	11.691
1998	11.938
1999	12.281
2000	12.413
2001	12.477
2002	12.676
2003	12.789
2004	12.869
2005	12.816
2006	13.069
2007	13.199
2008	13.249
2009	13.397
2010	13.39
2011	13.134
2012	13.087
2013	13.021
2014	13.18
2015	14.64
2016	13.83
2017	13.905
2018	13.98
2019	14.055
2020	14.13
2021	14.204
2022	14.279
2023	14.354
2024	14.429
2025	14.504
2026	14.579
2027	14.654
2028	14.729
2029	14.804
2030	14.879