Year	%
1998	95.97047
1999	99.93853
2001	99.95485
2004	99.69074
2005	99.98142
2006	96.75822
2007	96.27965
2008	99.7919
2009	99.92433
2010	99.87073
2011	97.28535
2012	99.91531
2013	99.97115
2014	99.99816
2015	99.95
2016	99.94342