Annual sq. km
1961 28381885.137
1962 28381885.137
1963 28381885.137
1964 28381885.137
1965 28381885.137
1966 28381885.137
1967 28381885.137
1968 28381885.137
1969 28381885.137
1970 28381885.137
1971 28381885.137
1972 28381885.137
1973 28381885.137
1974 28381885.137
1975 28381885.137
1976 28381885.137
1977 28381885.137
1978 28381885.137
1979 28381885.836999997
1980 28381885.836999997
1981 28381885.836999997
1982 28381885.836999997
1983 28381885.836999997
1984 28381885.836999997
1985 28381885.836999997
1986 28381885.836999997
1987 28381885.836999997
1988 28381885.836999997
1989 28381885.836999997
1990 28381885.836999997
1991 28381885.836999997
1992 28381885.836999997
1993 28381975.836999997
1994 28381985.836999997
1995 28382015.836999997
1996 28382095.836999997
1997 28450835.836999997
1998 28450765.836999997
1999 28450765.836999997
2000 28447208.836999997
2001 28447228.836999997
2002 28447538.836999997
2003 28447942.836999997
2004 28447668.836999997
2005 28447688.836999997
2006 28447978.836999997
2007 28448031.73
2008 28448046.73
2009 28448180.73
2010 28448427.73
2011 28448436.73
2012 28448806.73
2013 28802066.45
2014 28800918.740000002
2015 28805748.29
2016 28805943.51
2017 28805771.740000002
2018 28805811.799
2019 28806227.516
2020 28813751.765000004
2021 28813792.007999998