Year	sq. km
1990	6061465.699999999
1991	6030229.8719999995
1992	6013801.424000001
1993	5981882.274
1994	5949963.123000001
1995	5918043.973
1996	5886124.823000001
1997	5854205.671999999
1998	5822286.522
1999	5790367.3719999995
2000	5758448.220999998
2001	5729788.671
2002	5701129.120999998
2003	5672469.5709999995
2004	5643810.021000001
2005	5615150.471
2006	5586490.920999999
2007	5557831.371
2008	5529171.8209999995
2009	5500512.2700000005
2010	5471852.719999999
2011	5436180.396
2012	5400508.072000002
2013	5364835.748000001
2014	5329163.424000001
2015	5293491.1
2016	5257705.5
2017	5222736.442000001
2018	5187970.679999999
2019	5152489.7
2020	5117405.6
2021	5082056.912