Year	sq. km
1990	11348539.61
1991	11350400.468999997
1992	11437822.307
1993	11485243.556000002
1994	11487332.204
1995	11489420.853
1996	11491509.502000002
1997	11493598.15
1998	11495686.799
1999	11497775.447
2000	11507404.096
2001	11512746.269
2002	11518088.443
2003	11523430.616
2004	11528772.79
2005	11534114.963
2006	11539457.135999998
2007	11544799.31
2008	11550141.482999995
2009	11555483.657
2010	11560825.829999998
2011	11573194.09
2012	11585562.350000001
2013	11597930.610000001
2014	11610298.869999997
2015	11622667.13
2016	11631555.2
2017	11629150.3
2018	11630163.6
2019	11631360.499999998
2020	11632704
2021	11633949.767999997