Year	%
1993	14.83
1997	18.14
1998	18.55
2000	13.02
2003	8.91
2005	7.72
2006	6.91
2007	6.99
2008	7.64
2009	7.88
2010	7.96
2011	6.97
2012	8.94
2013	8.84
2014	8.74
2015	7.17
2016	7.52
2018	6.45
2019	6.64
2020	6.61
2021	6.38