Year	%
1996	99.96
1999	100
2000	100
2001	100
2002	100
2003	100
2004	99.96
2006	99.96
2007	99.98
2010	99.98
2011	99.98
2012	99.98
2013	99.98
2015	100
2016	100
2020	99.98
2021	99.98