Year	%
1988	0.9272829
1989	0.9029889
1990	0.8851068
1991	0.8609272
1992	0.8313668
1993	0.7933947
1994	0.7714999
1995	3.109982
1996	0.6560103
1997	2.881979
1998	2.785488
1999	2.9014
2000	2.860759
2001	3.318408
2002	3.506102
2003	3.421412
2004	3.995902
2005	3.282413
2006	0.561057
2007	0.0053852
2008	1.365604
2009	1.571373
2010	0.3751801
2011	0.9031324
2012	0.0256999
2013	2.121784
2014	0.0009036
2015	0.96957
2016	0.9178976
2017	0.9716507
2018	0.9751461
2019	0.4058521
2020	0.4579687
2021	0.4311079