Year	sq. km
1990	363996.8
1991	363875.086
1992	363753.37299999996
1993	363631.659
1994	363509.945
1995	363388.231
1996	363266.518
1997	363144.804
1998	363023.09
1999	362901.376
2000	362779.66299999994
2001	362680.58200000005
2002	362581.501
2003	362482.42
2004	362383.339
2005	362284.258
2006	362185.177
2007	362086.096
2008	361987.015
2009	361887.934
2010	361788.85299999994
2011	361479.924
2012	361170.995
2013	360862.066
2014	360553.138
2015	360244.209
2016	359898.8
2017	359563.5
2018	359228.2
2019	358892.9
2020	358557.6
2021	358222.3