Year	Square Kilometers
1990	154300
1991	154261
1992	154222
1993	154183
1994	154144
1995	154105
1996	154066
1997	154027
1998	153988
1999	153949
2000	153910
2001	153870
2002	153830
2003	153790
2004	153750
2005	153710
2006	153670
2007	153630
2008	153590
2009	153550
2010	153510
2011	153472
2012	153434
2013	153396
2014	153358
2015	153320