Year	Square Kilometers
1990	550
1991	600
1992	650
1993	700
1994	750
1995	800
1996	850
1997	900
1998	950
1999	1000
2000	1050
2001	1100
2002	1150
2003	1200
2004	1250
2005	1300
2006	1350
2007	1400
2008	1450
2009	1500
2010	1550
2011	1550
2012	1550
2013	1550
2014	1550
2015	1550