Year	Square Kilometers
1990	27780
1991	27956
1992	28132
1993	28308
1994	28484
1995	28660
1996	28836
1997	29012
1998	29188
1999	29364
2000	29540
2001	29674
2002	29808
2003	29942
2004	30076
2005	30210
2006	30286
2007	30362
2008	30438
2009	30514
2010	30590
2011	30760
2012	30930
2013	31100
2014	31270
2015	31440