Year	Square Kilometers
1990	49290
1991	48990
1992	48690
1993	48390
1994	48090
1995	47790
1996	47490
1997	47190
1998	46890
1999	46590
2000	46290
2001	45990
2002	45690
2003	45390
2004	45090
2005	44790
2006	44490
2007	44190
2008	43890
2009	43590
2010	43290
2011	42990
2012	42690
2013	42390
2014	42090
2015	41790