Year	sq. km
1961	1134934
1962	1134934
1963	1134934
1964	1134934
1965	1134934
1966	1134934
1967	1134934
1968	1134934
1969	1134934
1970	1134934
1971	1134934
1972	1134934
1973	1134934
1974	1134934
1975	1134934
1976	1134934
1977	1134934
1978	1134934
1979	1134934
1980	1134934
1981	1134934
1982	1134934
1983	1134934
1984	1134934
1985	1134934
1986	1134934
1987	1134934
1988	1134934
1989	1134934
1990	1134934
1991	1134934
1992	1134934
1993	1134934
1994	1134934
1995	1134934
1996	1135004
1997	1135004
1998	1134934
1999	1134934
2000	1134934
2001	1134934
2002	1134934
2003	1134988
2004	1134994
2005	1134994
2006	1134984
2007	1134984
2008	1134989
2009	1134994
2010	1134991
2011	1134990
2012	1134990
2013	1166998
2014	1166978
2015	1166978
2016	1166978
2017	1166783
2018	1166797
2019	1166797.04
2020	1166811.01
2021	1166811.04