Year	Square Kilometers
1990	577.5
1991	601.8
1992	626.2
1993	650.5
1994	674.9
1995	699.2
1996	723.5
1997	747.9
1998	772.2
1999	796.6
2000	820.9
2001	823.9
2002	826.9
2003	829.9
2004	832.9
2005	835.9
2006	838.9
2007	841.9
2008	844.9
2009	847.9
2010	850.9
2011	860.5
2012	870.2
2013	879.8
2014	889.4
2015	899