Year	sq. km
1990	131.3
1991	131.1
1992	130.9
1993	130.7
1994	130.5
1995	130.3
1996	130.1
1997	129.9
1998	129.7
1999	129.5
2000	129.3
2001	129.09
2002	128.88
2003	128.67
2004	128.46
2005	128.25
2006	128.04
2007	127.83
2008	127.62
2009	127.41
2010	127.2
2011	127.2
2012	127.2
2013	127.2
2014	127.2
2015	127.2
2016	127.2
2017	127.2
2018	128.1
2019	127.2
2020	127.2
2021	126.6