Year	sq. km
1961	4779203
1962	4779203
1963	4779203
1964	4779203
1965	4779203
1966	4779203
1967	4779203
1968	4779203
1969	4779203
1970	4779203
1971	4779203
1972	4779203
1973	4779203
1974	4779203
1975	4779203
1976	4779203
1977	4779203
1978	4779203
1979	4779203
1980	4779203
1981	4779203
1982	4779203
1983	4779203
1984	4779203
1985	4779203
1986	4779203
1987	4779203
1988	4779203
1989	4779203
1990	4779203
1991	4779203
1992	4779203
1993	4779203
1994	4772280
1995	4772280
1996	4772280
1997	4772280
1998	4772280
1999	4772280
2000	4772630
2001	4772630
2002	4772630
2003	4772630
2004	4770947
2005	4770947
2006	4770947
2007	4770947
2008	4770947
2009	4770947
2010	4770947
2011	4770947
2012	4770947
2013	4770947
2014	4770947
2015	4770130
2016	4770157
2017	4770157
2018	4770124
2019	4770124.470000001
2020	4770120
2021	4770120