Year	sq. km
1961	782389
1962	782579
1963	782709
1964	782959
1965	783199
1966	783449
1967	783869
1968	783599
1969	783159
1970	781839
1971	781299
1972	781559
1973	781811
1974	780849
1975	778322
1976	779038
1977	778830
1978	779142
1979	778694
1980	778044
1981	778418
1982	778809
1983	778919
1984	779169
1985	779357
1986	779441
1987	779933
1988	779893
1989	779453
1990	779655
1991	779455.4199999999
1992	779161.04
1993	780563.6599999999
1994	779482.28
1995	779686.3500000001
1996	780373.42
1997	780509.49
1998	780225.56
1999	780521.63
2000	781629.7
2001	779967.6400000001
2002	778603.6799999999
2003	779478.62
2004	779501.6599999999
2005	780944.9
2006	780715.24
2007	780599.48
2008	781973.8200000001
2009	783209.06
2010	782854.1329999999
2011	783564.1599999999
2012	783192.42
2013	780114.745
2014	781890.4199999999
2015	780381.86
2016	781897.1599999999
2017	782353.06
2018	782741.929
2019	782663.044
2020	782640.253
2021	782592.6089999999