Year	%
1993	20.00772
1994	19.10766
1995	19.40509
1996	19.35828
1997	17.96049
1998	20.0174
1999	33.48579
2000	18.52468
2001	20.08577
2002	21.08453
2003	21.07591
2004	21.02178
2005	23.8344
2006	17.67758
2007	34.08267
2008	30.26006
2009	26.16324
2010	20.22407
2011	23.97408
2012	15.05264
2014	24.70806
2015	31.21974
2016	30.8259
2017	25.3499
2018	20.66246
2019	20.70441
2020	17.99107
2021	16.06312