Year	%
1993	5.915292
1995	7.909115
1996	7.54548
1997	8.182645
1998	8.057295
1999	9.943935
2000	6.428477
2001	4.958632
2002	4.704039
2003	4.485039
2004	4.680654
2005	4.804553
2006	4.648942
2007	4.41417
2008	4.669835
2009	4.364102
2010	5.284272
2011	5.223921
2013	4.968318
2015	5.355942
2016	5.203377
2017	5.390875
2018	5.156528
2019	7.076924
2020	7.109756
2021	8.683312