Year	sq. km
1961	447420.11
1962	447420.11
1963	447420.11
1964	447420.11
1965	447420.11
1966	447420.11
1967	447420.11
1968	447420.11
1969	447420.11
1970	447420.11
1971	447420.11
1972	447420.11
1973	447420.11
1974	447420.11
1975	447420.11
1976	447420.11
1977	447420.11
1978	447420.11
1979	447420.11
1980	447420.11
1981	447420.11
1982	447420.11
1983	447420.11
1984	447420.11
1985	447420.11
1986	447420.11
1987	447420.11
1988	447420.11
1989	447420.11
1990	447420.11
1991	447420.11
1992	447420.11
1993	447420.11
1994	447420.11
1995	447420.11
1996	447420.11
1997	447420.11
1998	447420.11
1999	447420.11
2000	447420.11
2001	447420.11
2002	447420.11
2003	447420.11
2004	447420.11
2005	447420.11
2006	447420.11
2007	447420.11
2008	447420.11
2009	447420.11
2010	447420.11
2011	447420.11
2012	447420.11
2013	528447.52
2014	528447.52
2015	528449.29
2016	528449.29
2017	528449.29
2018	528449.29
2019	528861.06
2020	528860.704
2021	528860.72