Year	sq. km
1961	243610
1962	243610
1963	243610
1964	243610
1965	243610
1966	243610
1967	243610
1968	243610
1969	243610
1970	243610
1971	243610
1972	243610
1973	243610
1974	243610
1975	243610
1976	243610
1977	243610
1978	243610
1979	243610
1980	243610
1981	243610
1982	243610
1983	243610
1984	243610
1985	243610
1986	243610
1987	243610
1988	243610
1989	243610
1990	243610
1991	243610
1992	243610
1993	243610
1994	243610
1995	243610
1996	243610
1997	243610
1998	243610
1999	243610
2000	243610
2001	243610
2002	243610
2003	243610
2004	243610
2005	243610
2006	243610
2007	243610
2008	243610
2009	243610
2010	243610
2011	243610
2012	243610
2013	243610
2014	243610
2015	243610
2016	243610
2017	243610
2018	243610
2019	243610
2020	243610
2021	243610