Year	sq. km
1961	112490
1962	112490
1963	112490
1964	112490
1965	112490
1966	112490
1967	112490
1968	112490
1969	112490
1970	112490
1971	112490
1972	112490
1973	112490
1974	112490
1975	112490
1976	112490
1977	112490
1978	112490
1979	112490
1980	112490
1981	112490
1982	112490
1983	112490
1984	112490
1985	112490
1986	112490
1987	112490
1988	112490
1989	112490
1990	112490
1991	112490
1992	112490
1993	112490
1994	112490
1995	112490
1996	112490
1997	112490
1998	112490
1999	112490
2000	112490
2001	112490
2002	112490
2003	112490
2004	112490
2005	112490
2006	112490
2007	112490
2008	112490
2009	112490
2010	112490
2011	112490
2012	112490
2013	112490
2014	112490
2015	112490
2016	112490
2017	112490
2018	112490
2019	112490
2020	112490
2021	112490