Year	sq. km
1961	24273011
1962	24273011
1963	24273011
1964	24273011
1965	24273011
1966	24273011
1967	24273011
1968	24273011
1969	24273011
1970	24273011
1971	24273011
1972	24273011
1973	24273011
1974	24273011
1975	24273011
1976	24273011
1977	24273011
1978	24273011
1979	24273011
1980	24273011
1981	24273011
1982	24273011
1983	24273011
1984	24273011
1985	24273011
1986	24273011
1987	24273011
1988	24273011
1989	24273011
1990	24273011
1991	24273011
1992	24273011
1993	24273011
1994	24273011
1995	24273011
1996	24273011
1997	24273011
1998	24273011
1999	24273011
2000	24273011
2001	24273011
2002	24273011
2003	24273011
2004	24309045.114
2005	24309044.169
2006	24309013.93
2007	24308981.599
2008	24308998.542
2009	24309010.862
2010	24309005.451
2011	24309251.029
2012	24328317.533
2013	24328285.412
2014	24328271.958
2015	24328325.541
2016	24328312.92
2017	24328307.283
2018	24328313.382999998
2019	24328307.118
2020	24328265.871
2021	24328265.871