Year	Percent
1990	3.68
1991	4.28
1992	4.81
1993	4.81
1994	4.81
1995	3.78
1996	3.54
1997	3.17
1998	3.397
1999	3.64
2000	3.9
2001	4.178
2002	4.474
2003	4.79
2004	5.91
2005	6.024
2006	6.14
2007	6.258
2008	6.378
2009	6.5
2010	7.3
2011	6.54
2012	7.69
2013	9.13
2014	6.6
2015	8.621
2016	10.5
2017	10.581
2018	10.662
2019	10.743
2020	10.824
2021	10.905
2022	10.986
2023	11.068
2024	11.149
2025	11.23
2026	11.311
2027	11.392
2028	11.473
2029	11.554
2030	11.635