Year	%
1993	5.574205
1996	3.924119
1998	4.546546
1999	4.625113
2000	4.034521
2001	5.584908
2003	7.02765
2004	6.361022
2005	6.763637
2006	4.279069
2007	9.250369
2008	8.894116
2009	6.82076
2010	6.638261
2011	6.4141
2012	3.608788
2013	6.672081
2014	6.208499
2015	5.542462
2016	3.716056
2017	3.308434
2019	2.847375
2021	3.38054