Year	sq. km
1961	27400
1962	27400
1963	27400
1964	27400
1965	27400
1966	27400
1967	27400
1968	27400
1969	27400
1970	27400
1971	27400
1972	27400
1973	27400
1974	27400
1975	27400
1976	27400
1977	27400
1978	27400
1979	27400
1980	27400
1981	27400
1982	27400
1983	27400
1984	27400
1985	27400
1986	27400
1987	27400
1988	27400
1989	27400
1990	27400
1991	27400
1992	27400
1993	27400
1994	27400
1995	27400
1996	27400
1997	27400
1998	27400
1999	27400
2000	27400
2001	27400
2002	27400
2003	27400
2004	27400
2005	27400
2006	27400
2007	27400
2008	27400
2009	27400
2010	27400
2011	27400
2012	27400
2013	27400
2014	27400
2015	27400
2016	27400
2017	27400
2018	27400
2019	27400
2020	27400
2021	27400