Year	%
1990	11.86687
1993	13.68609
1995	20.96551
1996	13.98622
1997	11.99581
1998	11.20609
1999	11.09457
2000	11.27209
2001	12.35989
2002	12.37932
2003	12.372
2004	12.4724
2005	13.02703
2006	12.10289
2007	10.57238
2008	9.988091
2009	10.2565
2010	9.218617
2011	10.16626
2012	11.75478
2013	9.831507
2014	10.11528
2015	10.04102
2016	10.83146
2017	10.345
2018	9.899025
2019	9.437414
2020	10.50847
2021	10.80573