Year Square Kilometers 1961 447400 1962 447400 1963 447400 1964 447400 1965 447400 1966 447400 1967 447400 1968 447400 1969 447400 1970 447400 1971 447400 1972 447400 1973 447400 1974 447400 1975 447400 1976 447400 1977 447400 1978 447400 1979 447400 1980 447400 1981 447400 1982 447400 1983 447400 1984 447400 1985 447400 1986 447400 1987 447400 1988 447400 1989 447400 1990 447400 1991 447400 1992 447400 1993 447400 1994 447400 1995 447400 1996 447400 1997 447400 1998 447400 1999 447400 2000 447400 2001 447400 2002 447400 2003 447400 2004 447400 2005 447400 2006 447400 2007 447400 2008 447400 2009 447400 2010 447400 2011 447400 2012 447400 2013 447400 2014 447400 2015 447400 2016 447400 2017 447400