Year	%
1992	76.96164
1993	76.22266
1994	73.00536
1996	52.5029
1997	41.59121
1998	42.41833
1999	40.94209
2000	42.4396
2001	40.45974
2002	26.1491
2003	22.3696
2004	16.10332
2005	19.11529
2006	12.0346
2007	14.36057
2008	13.24268
2009	13.27619
2010	11.32672
2011	13.35629
2014	16.23131
2015	16.04741
2016	17.07809
2017	15.15545
2018	11.00744
2019	1.765624
2020	1.658442
2021	1.689822