Year	Percent
1990	6.493
1991	6.51
1992	4.765
1993	3.47
1994	3.24
1995	2.98
1996	2.98
1997	2.08
1998	1.87
1999	2.23
2000	1.78
2001	2.01
2002	1.97
2003	2.23
2004	2.22
2005	2.35
2006	1.93
2007	1.48
2008	2.79
2009	2.51
2010	2.49
2011	2.92
2012	2.78
2013	2.75
2014	3.31
2015	4.19
2016	3.78
2017	3.857
2018	3.933
2019	4.01
2020	4.087
2021	4.164
2022	4.24
2023	4.317
2024	4.394
2025	4.471
2026	4.547
2027	4.624
2028	4.701
2029	4.777
2030	4.854