Year	Square Kilometers
1990	47240
1991	46073
1992	44906
1993	43739
1994	42572
1995	41405
1996	40238
1997	39071
1998	37904
1999	36737
2000	35570
2001	36550
2002	37530
2003	38510
2004	39490
2005	40470
2006	40836
2007	41202
2008	41568
2009	41934
2010	42300
2011	42666
2012	43032
2013	43398
2014	43764
2015	44130