Year	sq. km
1990	7339644.499999999
1991	7306915.748
1992	7274186.996000001
1993	7241458.244000001
1994	7208729.492
1995	7176000.74
1996	7143271.988000001
1997	7110543.236
1998	7077814.484000001
1999	7045085.732000002
2000	7012356.9799999995
2001	6977792.902
2002	6943228.824000001
2003	6908664.745999998
2004	6874100.667999999
2005	6839536.590000003
2006	6804972.511999999
2007	6770408.434
2008	6735844.356000001
2009	6701280.278000002
2010	6666716.2
2011	6627570.26
2012	6588424.32
2013	6549278.38
2014	6510132.440000001
2015	6470986.500000002
2016	6430836.879000002
2017	6391509.300000001
2018	6352213.380000001
2019	6311896.300000001
2020	6271975.7
2021	6231790.779