Year	Square Kilometers
1990	4650
1991	4820
1992	4989.9
1993	5159.9
1994	5329.8
1995	5499.8
1996	5669.7
1997	5839.7
1998	6009.6
1999	6179.6
2000	6349.5
2001	6469.3
2002	6589
2003	6708.8
2004	6828.6
2005	6948.4
2006	7010
2007	7071.5
2008	7133.2
2009	7194.8
2010	7256.3
2011	7313.1
2012	7369.9
2013	7426.6
2014	7483.4
2015	7540.2