Year	Square Kilometers
1990	235.8
1991	232.7
1992	229.6
1993	226.5
1994	223.4
1995	220.2
1996	217.1
1997	214
1998	210.9
1999	207.8
2000	204.7
2001	201.2
2002	197.7
2003	194.3
2004	190.8
2005	187.3
2006	186.2
2007	185
2008	183.9
2009	182.7
2010	181.6
2011	180.5
2012	179.4
2013	178.2
2014	177.1
2015	176