Year	%
1999	12.73
2000	23.26
2001	14.6
2002	25.95
2004	13.63
2005	16.07
2006	11.94
2007	13.88
2014	11.85
2015	12.2
2016	12.18
2017	10.75
2018	12.94
2019	12.71
2020	12.17