Year	Square Kilometers
1990	221640
1991	218370
1992	215100
1993	211830
1994	208560
1995	205290
1996	202020
1997	198750
1998	195480
1999	192210
2000	188940
2001	185670
2002	182400
2003	179130
2004	175860
2005	172590
2006	169320
2007	166050
2008	162780
2009	159510
2010	156240
2011	153116
2012	149992
2013	146868
2014	143744
2015	140620