Year	%
1999	12.88
2000	16.5
2001	6.84
2002	7.01
2004	6.14
2005	6.61
2006	4.96
2007	5.55
2014	3.87
2015	3.89
2016	3.36
2017	3.26
2018	1.21
2019	3.1
2020	2.7