Year	Square Kilometers
1990	347930
1991	344997
1992	342064
1993	339131
1994	336198
1995	333265
1996	330332
1997	327399
1998	324466
1999	321533
2000	318600
2001	315252
2002	311904
2003	308556
2004	305208
2005	301860
2006	298680
2007	295500
2008	292320
2009	289140
2010	285960
2011	282992
2012	280024
2013	277056
2014	274088
2015	271120