Year	Square Kilometers
1990	1603630
1991	1600516
1992	1597402
1993	1594288
1994	1591174
1995	1588060
1996	1584946
1997	1581832
1998	1578718
1999	1575604
2000	1572490
2001	1569376
2002	1566262
2003	1563148
2004	1560034
2005	1556920
2006	1553806
2007	1550692
2008	1547578
2009	1544464
2010	1541350
2011	1538236
2012	1535122
2013	1532008
2014	1528894
2015	1525780