Year	scale 1-100
1970	50
1971	50
1972	50
1973	50
1974	50
1975	50
1976	50
1977	50
1978	50
1979	50
1980	50
1981	50
1982	50
1983	50
1984	50
1985	50
1986	50
1987	50
1988	50
1989	50
1990	50
1991	50
1992	50
1993	50
1994	50
1995	50
1996	50
1997	50
1998	50
1999	50
2000	50
2001	50
2002	50
2003	50
2004	50
2005	50
2006	50
2007	50
2008	50
2009	50
2010	50
2011	56.25
2012	56.25
2013	56.25
2014	58.75
2015	58.75
2016	58.75
2017	58.75
2018	58.75
2019	58.75
2020	58.75
2021	58.75
2022	58.75
2023	58.75