Year	sq. km
1993	19021.59
1994	19020.52
1995	19019.45
1996	19018.38
1997	19017.31
1998	19016.24
1999	19015.17
2000	19014.1
2001	19030.6
2002	19047.1
2003	19063.6
2004	19080.1
2005	19096.6
2006	19113.1
2007	19129.6
2008	19146.1
2009	19162.6
2010	19179.1
2011	19186.78
2012	19194.46
2013	19202.14
2014	19209.82
2015	19217.5
2016	19233.7
2017	19259
2018	19259
2019	19259
2020	19259
2021	19259