Year	Percent
1993	4.02599
1994	13.51885
1995	18.43261
1996	44.27613
1997	47.36648
1998	78.86425
1999	59.79377
2000	137.96817
2001	91.85546
2002	136.28684
2003	93.80382
2004	93.62117
2005	84.04779
2006	45.76611
2007	21.43898
2008	17.11452
2009	24.10807
2010	28.83413
2011	14.80795
2012	22.19756
2013	18.56105
2014	14.75248
2015	11.69363
2016	12.69566
2017	14.54993
2018	13.95366
2019	12.31197
2020	28.20694
2021	17.53954