Year	%
1999	0
2000	4.85
2001	6.79
2002	6.8
2003	4.86
2004	4.88
2005	4.09
2006	4.08
2007	4.88
2008	4.88
2009	4.88
2010	4.91
2011	4.91
2013	4.91
2015	4.91
2017	4.88
2018	4.86
2019	4.87
2020	4.86
2021	4.87