Year	Percent
1990	2.18
1991	2.25
1992	1.84
1993	2.03
1994	1.68
1995	1.74
1996	1.93
1997	1.67
1998	1.53
1999	1.75
2000	1.42
2001	1.48
2002	1.32
2003	1.47
2004	1.33
2005	1.1
2006	1.2
2007	1.23
2008	1.29
2009	1.28
2010	1.31
2011	1.35
2012	1.41
2013	1.49
2014	1.59
2015	1.74
2016	1.88
2017	1.878
2018	1.875
2019	1.873
2020	1.871
2021	1.868
2022	1.866
2023	1.864
2024	1.861
2025	1.859
2026	1.857
2027	1.854
2028	1.852
2029	1.85
2030	1.847