Year	%
1999	10.14
2000	14.16
2001	4.92
2002	4.96
2004	4.24
2005	4.9
2006	4.23
2007	4.87
2014	4.67
2015	4.7
2016	4.72
2017	4.69
2018	4.67
2019	4.62
2020	4.74