Year	sq. km
1992	8691472.093999999
1993	8693381.203
1994	8695290.311999999
1995	8697199.422
1996	8699108.531
1997	8701017.64
1998	8702926.749
1999	8704835.859
2000	8706744.967999998
2001	8714807.726
2002	8722870.482
2003	8730933.24
2004	8738995.997
2005	8747058.755
2006	8788705.512
2007	8797222.269
2008	8805739.026999999
2009	8814255.783
2010	8822772.541000001
2011	8825117.135
2012	8827461.726999998
2013	8829806.32
2014	8832150.914
2015	8834495.507000001
2016	8838352.052000001
2017	8842640.674999999
2018	8845392.462000001
2019	8848145.999999998
2020	8850901.7
2021	8853655.959