Year	sq. km
1961	910770
1962	910770
1963	910770
1964	910770
1965	910770
1966	910770
1967	910770
1968	910770
1969	910770
1970	910770
1971	910770
1972	910770
1973	910770
1974	910770
1975	910770
1976	910770
1977	910770
1978	910770
1979	910770
1980	910770
1981	910770
1982	910770
1983	910770
1984	910770
1985	910770
1986	910770
1987	910770
1988	910770
1989	910770
1990	910770
1991	910770
1992	910770
1993	910770
1994	910770
1995	910770
1996	910770
1997	910770
1998	910770
1999	910770
2000	910770
2001	910770
2002	910770
2003	910770
2004	910770
2005	910770
2006	910770
2007	910770
2008	910770
2009	910770
2010	910770
2011	910770
2012	910770
2013	910770
2014	910770
2015	910770
2016	910770
2017	910770
2018	910770
2019	910770
2020	910770
2021	910770