Year	sq. km
1990	5339347.999999999
1991	5315504.756
1992	5384143.713
1993	5359806.668999999
1994	5335469.625000001
1995	5311132.581000001
1996	5286795.538
1997	5262458.494
1998	5238121.449999999
1999	5213784.406000001
2000	5189447.362999999
2001	5167389.882
2002	5145332.400999999
2003	5123274.92
2004	5101217.438999999
2005	5079159.958
2006	5057102.477
2007	5035044.995999999
2008	5012987.514999999
2009	4990930.033999999
2010	4968872.552999999
2011	4943003.3440000005
2012	4917134.135
2013	4891264.925999999
2014	4865395.717999999
2015	4839526.509
2016	4812630.1790000005
2017	4786819.699999998
2018	4761632.379999999
2019	4735958.299999999
2020	4710928
2021	4685468.512999999