Year	Square Kilometers
1990	560
1991	560
1992	560
1993	560
1994	560
1995	560
1996	560
1997	560
1998	560
1999	560
2000	560
2001	560
2002	560
2003	560
2004	560
2005	560
2006	555.2
2007	550.4
2008	545.6
2009	540.8
2010	536
2011	536
2012	536
2013	536
2014	536
2015	536