Year	% of land area
1991	9.347826086956522
1992	9.347826086956522
1993	9.347826086956522
1994	9.347826086956522
1995	9.347826086956522
1996	9.347826086956522
1997	9.347826086956522
1998	9.347826086956522
1999	9.347826086956522
2000	9.347826086956522
2001	9.347826086956522
2002	9.347826086956522
2003	9.347826086956522
2004	9.347826086956522
2005	9.347826086956522
2006	9.347826086956522
2007	9.347826086956522
2008	9.347826086956522
2009	9.347826086956522
2010	9.347826086956522
2011	9.347826086956522
2012	9.347826086956522
2013	9.347826086956522
2014	9.347826086956522
2015	9.347826086956522
2016	9.347826086956522
2017	9.347826086956522
2018	9.347826086956522
2019	9.347826086956522
2020	9.347826086956522
2021	9.347826086956522