Year	sq. km
1961	294110
1962	294110
1963	294110
1964	294110
1965	294110
1966	294110
1967	294110
1968	294110
1969	294110
1970	294110
1971	294110
1972	294110
1973	294110
1974	294110
1975	294110
1976	294110
1977	294110
1978	294110
1979	294110
1980	294110
1981	294110
1982	294110
1983	294110
1984	294110
1985	294110
1986	294110
1987	294110
1988	294110
1989	294110
1990	294110
1991	294110
1992	294110
1993	294110
1994	294110
1995	294110
1996	294110
1997	294110
1998	294110
1999	294110
2000	295718
2001	295718
2002	295718
2003	295718
2004	295718
2005	295718
2006	295718
2007	295718
2008	295718
2009	295718
2010	295718
2011	295718
2012	295718
2013	295718
2014	295718
2015	295718
2016	295718
2017	295718
2018	295718
2019	295717
2020	295717
2021	295717