Year	sq. km
1961	133974296.037
1962	133974296.037
1963	133974296.037
1964	133974296.037
1965	133974296.037
1966	133974296.037
1967	133974296.037
1968	133974296.037
1969	133974296.037
1970	133974296.037
1971	133974296.037
1972	133974296.037
1973	133974296.037
1974	133974296.037
1975	133974296.037
1976	133974296.037
1977	133972176.037
1978	133972176.037
1979	133974216.737
1980	133974206.737
1981	133974206.737
1982	133974206.737
1983	133974206.737
1984	133974206.737
1985	133974206.737
1986	133974206.737
1987	133972866.737
1988	133972876.737
1989	133972876.737
1990	133973546.737
1991	133973576.737
1992	133973626.737
1993	133973736.737
1994	133966823.737
1995	133966853.737
1996	133966933.737
1997	134035673.737
1998	134008413.737
1999	134008413.737
2000	134005397.737
2001	134005787.937
2002	134006212.937
2003	134006668.437
2004	134040792.35100001
2005	134042748.70600002
2006	134043053.667
2007	134043135.22900002
2008	134242621.172
2009	134240304.992
2010	134240578.78100002
2011	134240898.55900002
2012	134260457.06300002
2013	134617458.062
2014	134615534.898
2015	134623049.131
2016	134624250.83
2017	134627589.723
2018	134627209.182
2019	134725642.51400003
2020	134732038.31500003
2021	140486936.90900004