Year	Square Kilometers
1990	22100
1991	22050
1992	22050
1993	22025
1994	22000
1995	21975
1996	21950
1997	21925
1998	21900
1999	21875
2000	21850
2001	21850
2002	21850
2003	21850
2004	21850
2005	21850
2006	21850
2007	21850
2008	21850
2009	21850
2010	21850
2011	21850
2012	21850
2013	21850
2014	21850
2015	21850