Year	sq. km
1990	65
1991	65.2
1992	65.4
1993	65.6
1994	65.8
1995	66
1996	66.2
1997	66.4
1998	66.6
1999	66.8
2000	67
2001	66.999
2002	66.998
2003	66.998
2004	66.997
2005	66.99600000000001
2006	66.995
2007	66.994
2008	66.994
2009	66.993
2010	66.992
2011	66.994
2012	66.995
2013	66.997
2014	66.998
2015	67
2016	67
2017	67
2018	67
2019	67
2020	67
2021	67