Year	sq. km
1961	965.32
1962	965.32
1963	965.32
1964	965.32
1965	965.32
1966	965.32
1967	965.32
1968	965.32
1969	965.32
1970	965.32
1971	965.32
1972	965.32
1973	965.32
1974	965.32
1975	965.32
1976	965.32
1977	965.32
1978	965.32
1979	965.32
1980	965.32
1981	965.32
1982	965.32
1983	965.32
1984	965.32
1985	965.32
1986	965.32
1987	965.32
1988	965.32
1989	965.32
1990	965.32
1991	965.32
1992	965.32
1993	965.32
1994	965.32
1995	965.24
1996	965.01
1997	965.01
1998	964.93
1999	964.93
2000	964.93
2001	964.93
2002	965.39
2003	965.39
2004	965.39
2005	965.39
2006	965.39
2007	965.39
2008	965.39
2009	964.1
2010	963.95
2011	964.03
2012	964.03
2013	964.03
2014	964.18
2015	964.18
2016	963.5
2017	963.5
2018	963.35
2019	963.35
2020	960.7
2021	960.7