Year	Percent
1990	5.42
1991	6.03
1992	6.31
1993	7.53
1994	6.75
1995	6.97
1996	6.6
1997	6.86
1998	7.01
1999	6.53
2000	6.01
2001	6.56
2002	6.08
2003	6.31
2004	6.55
2005	6.7
2006	7.74
2007	8.07
2008	8.5
2009	7.42
2010	10.09
2011	12.08
2012	11.54
2013	12.66
2014	13.43
2015	13.3
2016	13.28
2017	13.466
2018	13.652
2019	13.837
2020	14.023
2021	14.209
2022	14.395
2023	14.581
2024	14.767
2025	14.952
2026	15.138
2027	15.324
2028	15.51
2029	15.696
2030	15.882