Year	sq. km
1961	37072773.037
1962	37072773.037
1963	37072773.037
1964	37072773.037
1965	37072773.037
1966	37072773.037
1967	37072773.037
1968	37072773.037
1969	37072773.037
1970	37072773.037
1971	37072773.037
1972	37072773.037
1973	37072773.037
1974	37072773.037
1975	37072773.037
1976	37072773.037
1977	37072773.037
1978	37072773.037
1979	37072773.737
1980	37072683.737
1981	37072683.737
1982	37072683.737
1983	37072683.737
1984	37072683.737
1985	37072683.737
1986	37072683.737
1987	37072683.737
1988	37072683.737
1989	37072683.737
1990	37072683.737
1991	37072683.737
1992	37072703.736999996
1993	37072723.737
1994	37072733.737
1995	37072763.737
1996	37072853.737
1997	37141603.737
1998	37141533.737
1999	37141533.737
2000	37143694.737
2001	37144080.737
2002	37144456.737
2003	37144902.737
2004	37144651.737
2005	37144711.737
2006	37145047.337
2007	37145161.83
2008	37344791.83
2009	37345004.129999995
2010	37345378.33
2011	37345449.53
2012	37345949.53
2013	37703564.65
2014	37703392.94
2015	37703429.59
2016	37704275.91
2017	37704129.44
2018	37704197.599
2019	37704639.316
2020	37715538.565
2021	43470244.908