Year	Square Kilometers
1961	60
1962	60
1963	60
1964	60
1965	60
1966	60
1967	60
1968	60
1969	60
1970	60
1971	60
1972	60
1973	60
1974	60
1975	60
1976	60
1977	60
1978	60
1979	60
1980	60
1981	60
1982	60
1983	60
1984	60
1985	60
1986	60
1987	60
1988	60
1989	60
1990	60
1991	60
1992	60
1993	60
1994	60
1995	60
1996	60
1997	60
1998	60
1999	60
2000	60
2001	60
2002	60
2003	60
2004	60
2005	60
2006	60
2007	60
2008	60
2009	60
2010	60
2011	60
2012	60
2013	60
2014	60
2015	60
2016	60
2017	60