Year	Square Kilometers
1990	33270
1991	33318
1992	33366
1993	33414
1994	33462
1995	33510
1996	33558
1997	33606
1998	33654
1999	33702
2000	33750
2001	34302
2002	34854
2003	35406
2004	35958
2005	36510
2006	36682
2007	36854
2008	37026
2009	37198
2010	37370
2011	37542
2012	37714
2013	37886
2014	38058
2015	38230