Year	sq. km
1992	22124.98
1993	22157.97
1994	22190.96
1995	22223.95
1996	22256.94
1997	22289.93
1998	22322.92
1999	22355.91
2000	22388.9
2001	22486.03
2002	22583.16
2003	22680.29
2004	22777.42
2005	22874.55
2006	22971.68
2007	23068.81
2008	23165.94
2009	23263.07
2010	23360.2
2011	23530.18
2012	23700.16
2013	23870.14
2014	24040.12
2015	24210.1
2016	24212.5
2017	24384
2018	24384
2019	24384
2020	24384
2021	24384