Year	Square Kilometers
1990	1571406
1991	1591265.9
1992	1611125.8
1993	1630985.7
1994	1650845.6
1995	1670705.5
1996	1690565.4
1997	1710425.3
1998	1730285.2
1999	1750145.1
2000	1770005
2001	1802091.8
2002	1834178.6
2003	1866265.4
2004	1898352.2
2005	1930439
2006	1945571.8
2007	1960704.6
2008	1975837.4
2009	1990970.2
2010	2006103
2011	2021525
2012	2036947
2013	2052369
2014	2067791
2015	2083213