Year	% of land area
1990	0.009693053311793215
1991	0.009693053311793215
1992	0.009693053311793215
1993	0.009693053311793215
1994	0.009693053311793215
1995	0.009693053311793215
1996	0.009693053311793215
1997	0.009693053311793215
1998	0.009693053311793215
1999	0.009693053311793215
2000	0.009693053311793215
2001	0.009693053311793215
2002	0.009693053311793215
2003	0.009693053311793215
2004	0.009693053311793215
2005	0.009693053311793215
2006	0.009693053311793215
2007	0.009693053311793215
2008	0.009693053311793215
2009	0.009693053311793215
2010	0.009693053311793215
2011	0.009693053311793215
2012	0.009693053311793215
2013	0.009693053311793215
2014	0.009693053311793215
2015	0.009693053311793215
2016	0.009046849757673668
2017	0.008723747980613893
2018	0.00840064620355412
2019	0.008077544426494346
2020	0.008077544426494346
2021	0.007862035541195477