Year	sq. km
1990	10110421.978999995
1991	10117270.155000001
1992	10227913.209
1993	10280020.674999993
1994	10286795.538999999
1995	10293570.405000001
1996	10300345.271
1997	10307120.135
1998	10313895.000999998
1999	10320669.864999998
2000	10334984.730999999
2001	10343181.498999998
2002	10351378.268999996
2003	10359575.039
2004	10367771.808999997
2005	10375968.577999996
2006	10384165.346999997
2007	10392362.116999999
2008	10400558.887000004
2009	10408755.657
2010	10416952.426
2011	10431570.490000002
2012	10446171.753000002
2013	10460773.016999999
2014	10475374.279999997
2015	10489975.543999998
2016	10502069.757
2017	10501830.984
2018	10504419.9
2019	10507188.7
2020	10510106.499999998
2021	10512924.965999996