Year	%
1980	5.4
1981	5.4
1982	5.76
1983	5.76
1984	5.759999999
1985	7.2
1986	7.2
1987	7.2
1988	8.64
1989	11.34
1990	8.64
1991	7.56
1992	7.56
1993	10.98
1994	10.98
1995	10.98
1996	7.47
1997	5.67
1998	3.78
1999	2.25
2000	2.25
2001	2.25
2002	1.98
2003	1.98
2004	2.25
2005	2.25
2006	2.52
2007	4.14
2008	2.25
2009	2.25
2010	2.75
2011	3.5
2012	3
2013	3
2014	2.75
2015	1.5
2016	1.5
2017	1.5
2018	1.5
2019	1.5
2020	1.5
2021	1.5
2022	1.5
2023	1.5