Year	sq. km
1961	82520
1962	82520
1963	82520
1964	82520
1965	82520
1966	82520
1967	82520
1968	82520
1969	82520
1970	82520
1971	82520
1972	82520
1973	82520
1974	82520
1975	82520
1976	82520
1977	82520
1978	82520
1979	82520
1980	82520
1981	82520
1982	82520
1983	82520
1984	82520
1985	82520
1986	82520
1987	82520
1988	82520
1989	82520
1990	82520
1991	82520
1992	82520
1993	82520
1994	82520
1995	82520
1996	82520
1997	82520
1998	82520
1999	82520
2000	82520
2001	82520
2002	82520
2003	82520
2004	82520
2005	82520
2006	82520
2007	82520
2008	82520
2009	82520
2010	82520
2011	82520
2012	82520
2013	82520
2014	82520
2015	82520
2016	82520
2017	82520
2018	82520
2019	82520
2020	82520
2021	82520