Year	Square Kilometers
1961	312690
1962	312690
1963	312690
1964	312690
1965	312690
1966	312690
1967	312690
1968	312690
1969	312690
1970	312690
1971	312690
1972	312690
1973	312690
1974	312690
1975	312690
1976	312690
1977	312690
1978	312690
1979	312690
1980	312690
1981	312690
1982	312690
1983	312690
1984	312690
1985	312690
1986	312690
1987	312690
1988	312690
1989	312690
1990	312690
1991	312690
1992	312690
1993	312690
1994	312690
1995	312690
1996	312690
1997	312690
1998	312690
1999	312690
2000	312690
2001	312690
2002	312690
2003	312690
2004	312690
2005	312690
2006	312680
2007	312680
2008	312680
2009	312680
2010	312680
2011	312680
2012	312680
2013	312680
2014	312680
2015	312680
2016	312680
2017	312680