Year	sq. km
1992	9532.36
1993	9574.84
1994	9617.32
1995	9659.8
1996	9702.28
1997	9744.76
1998	9787.24
1999	9829.72
2000	9872.2
2001	9917.475
2002	9962.749
2003	10008.024
2004	10053.298
2005	10098.573
2006	10143.848
2007	10189.122
2008	10234.396999999999
2009	10279.671
2010	10324.946
2011	10415.731
2012	10506.515
2013	10597.3
2014	10688.085
2015	10778.87
2016	10874.752
2017	10971.848
2018	11087.15
2019	11202.4
2020	11317.7
2021	11432.966999999999