Year	years
1970	14
1971	14
1972	14
1973	14
1974	14
1975	14
1976	14
1977	14
1978	14
1979	14
1980	14
1981	14
1982	14
1983	14
1984	14
1985	14
1986	14
1987	14
1988	14
1989	14
1990	14
1991	14
1992	14
1993	14
1994	14
1995	14
1996	14
1997	14
1998	14
1999	14
2000	14
2001	14
2002	14
2003	14
2004	14
2005	14
2006	14
2007	14
2008	14
2009	14
2010	14
2011	14
2012	14
2013	14
2014	14
2015	14
2016	14
2017	14
2018	14
2019	14
2020	14
2021	14
2022	14
2023	14