Year	sq. km
1990	63993.2
1991	62993.2
1992	61993.2
1993	60993.2
1994	59993.2
1995	58993.2
1996	57993.2
1997	56993.2
1998	55993.2
1999	54993.2
2000	53993.2
2001	52782.03
2002	51570.86
2003	50359.69
2004	49148.52
2005	47937.35
2006	46726.18
2007	45515.01
2008	44303.84
2009	43092.67
2010	41881.5
2011	41320.26
2012	40759.02
2013	40197.78
2014	39636.54
2015	39075.3
2016	38075.3
2017	37075.3
2018	36075.3
2019	35075.3
2020	34075.3
2021	33075.3