Year	Square Kilometers
1990	336270
1991	336243
1992	336216
1993	336189
1994	336162
1995	336135
1996	336108
1997	336081
1998	336054
1999	336027
2000	336000
2001	335972
2002	335944
2003	335916
2004	335888
2005	335860
2006	335834
2007	335808
2008	335782
2009	335756
2010	335730
2011	335702
2012	335674
2013	335646
2014	335618
2015	335590