Year	Percent
1993	7.64725
1994	8.50651
1995	8.59709
1996	8.00341
1997	7.63385
1998	7.17124
1999	6.6796
2000	6.2319
2001	6.12074
2002	5.5443
2003	5.21386
2004	4.98217
2005	5.18624
2006	5.15583
2007	4.61761
2008	4.89912
2009	5.47227
2010	5.269
2011	5.64729
2012	5.77144
2013	5.97048
2014	5.97249
2015	6.30834
2016	6.59879
2017	6.63179
2018	6.59218
2019	7.01965
2020	8.68324
2021	8.3408
2022	8.09937