Year	sq. km
1990	9775292.700000001
1991	9722610.549999999
1992	9669928.399999999
1993	9617246.249999998
1994	9564564.1
1995	9511881.950000003
1996	9459199.8
1997	9406517.649999999
1998	9353835.5
1999	9301153.35
2000	9248471.2
2001	9193638.470000003
2002	9138805.74
2003	9083973.010000002
2004	9029140.28
2005	8974307.550000003
2006	8919474.819999998
2007	8864642.09
2008	8809809.36
2009	8754976.63
2010	8700143.900000002
2011	8670977.42
2012	8641810.940000001
2013	8612644.460000003
2014	8583477.980000002
2015	8554311.499999998
2016	8524705.000000002
2017	8490011.6
2018	8466493.6
2019	8440882.7
2020	8416226.6
2021	8390933.967