Year	scale 1-100
1970	53.75
1971	53.75
1972	53.75
1973	53.75
1974	53.75
1975	53.75
1976	53.75
1977	53.75
1978	53.75
1979	53.75
1980	53.75
1981	53.75
1982	53.75
1983	53.75
1984	53.75
1985	53.75
1986	53.75
1987	53.75
1988	53.75
1989	53.75
1990	53.75
1991	53.75
1992	53.75
1993	53.75
1994	53.75
1995	53.75
1996	53.75
1997	53.75
1998	53.75
1999	53.75
2000	53.75
2001	53.75
2002	53.75
2003	53.75
2004	53.75
2005	53.75
2006	53.75
2007	53.75
2008	53.75
2009	53.75
2010	53.75
2011	53.75
2012	53.75
2013	56.25
2014	56.25
2015	56.25
2016	56.25
2017	56.25
2018	56.25
2019	56.25
2020	56.25
2021	56.25
2022	56.25
2023	56.25