Year	sq. km
1990	90760.6
1991	91010.2
1992	91259.8
1993	91509.4
1994	91759
1995	92008.6
1996	92258.2
1997	92507.8
1998	92757.4
1999	93007
2000	93256.6
2001	94622.92
2002	95989.24
2003	97355.56
2004	98721.88
2005	100088.2
2006	101454.52
2007	102820.84
2008	104187.16
2009	105553.48
2010	106919.8
2011	106919.8
2012	106919.8
2013	106919.8
2014	106919.8
2015	106919.8
2016	107020.8
2017	107105.9
2018	107270.3
2019	107434.7
2020	107518.7
2021	107656.3