Year	sq. km
1990	805473.91
1991	811358.529
1992	902804.127
1993	927931.326
1994	934035.8640000001
1995	940140.403
1996	946244.9419999999
1997	952349.48
1998	958454.0190000001
1999	964558.5569999999
2000	978203.0959999999
2001	982131.8389999999
2002	986060.5829999998
2003	989989.3259999999
2004	993918.0700000001
2005	997846.813
2006	1001775.556
2007	1005704.2999999999
2008	1009633.0429999998
2009	1013561.7869999999
2010	1017490.53
2011	1019686.45
2012	1021882.3699999999
2013	1024078.2900000002
2014	1026274.2099999998
2015	1028470.13
2016	1030071.2
2017	1031881.2
2018	1033420
2019	1034958.3999999998
2020	1036486.8
2021	1038021.8669999999