Year	sq. km
1961	1861
1962	1861
1963	1861
1964	1861
1965	1861
1966	1861
1967	1861
1968	1861
1969	1861
1970	1861
1971	1861
1972	1861
1973	1861
1974	1861
1975	1861
1976	1861
1977	1861
1978	1861
1979	1861
1980	1861
1981	1861
1982	1861
1983	1861
1984	1861
1985	1861
1986	1861
1987	1861
1988	1861
1989	1861
1990	1861
1991	1861
1992	1861
1993	1861
1994	1861
1995	1861
1996	1861
1997	1861
1998	1861
1999	1861
2000	1861
2001	1861
2002	1861
2003	1861
2004	1861
2005	1861
2006	1861
2007	1861
2008	1861
2009	1861
2010	1861
2011	1861
2012	1861
2013	1861
2014	1861
2015	1861
2016	1861
2017	1861
2018	1861
2019	1861
2020	1861
2021	1861