Year	sq. km
1990	101.1
1991	100.44
1992	99.78
1993	99.12
1994	98.46
1995	97.8
1996	97.14
1997	96.48
1998	95.82
1999	95.16
2000	94.5
2001	93.83
2002	93.16
2003	92.49
2004	91.82
2005	91.15
2006	90.48
2007	89.81
2008	89.14
2009	88.47
2010	87.8
2011	87.14
2012	86.48
2013	85.82
2014	85.16
2015	84.5
2016	83.8
2017	83.2
2018	82.5
2019	81.8
2020	81.2
2021	80.533