Year	Percent
1993	1.29746
1994	1.15914
1995	1.27041
1996	1.33975
1997	1.79996
1998	2.05174
1999	2.29034
2000	2.14405
2001	2.17295
2002	2.61188
2003	2.08169
2004	1.4558
2005	1.40109
2006	1.28727
2007	1.23523
2008	1.65673
2009	1.73577
2010	1.41108
2011	1.61714
2012	1.32022
2013	1.68566
2014	1.52875
2015	2.19845
2016	2.15059
2017	1.60162
2018	1.40535
2019	1.56647
2020	2.83651
2021	1.89697