Year	Square Kilometers
1961	4000
1962	4000
1963	4000
1964	4000
1965	4000
1966	4000
1967	4000
1968	4000
1969	4000
1970	4000
1971	4000
1972	4000
1973	4000
1974	4000
1975	4000
1976	4000
1977	4000
1978	4000
1979	4000
1980	4000
1981	4000
1982	4000
1983	4000
1984	4000
1985	4000
1986	4000
1987	4000
1988	4000
1989	4000
1990	4000
1991	4000
1992	4000
1993	4000
1994	4000
1995	4000
1996	4000
1997	4000
1998	4000
1999	4000
2000	4000
2001	4000
2002	4000
2003	4000
2004	4000
2005	4000
2006	4000
2007	4000
2008	4000
2009	4000
2010	4000
2011	4000
2012	4000
2013	4000
2014	4000
2015	4000
2016	4000
2017	4000