Year	sq. km
1991	334.45
1992	332.8
1993	331.15
1994	329.5
1995	327.85
1996	326.2
1997	324.55
1998	322.9
1999	321.25
2000	319.6
2001	317.96
2002	316.32
2003	314.68
2004	313.04
2005	311.4
2006	309.76
2007	308.12
2008	306.48
2009	304.84
2010	303.2
2011	301.54
2012	299.88
2013	298.22
2014	296.56
2015	294.9
2016	243.6
2017	243.6
2018	243.6
2019	243.6
2020	243.6
2021	243.6