Year	%
1989	1.059719
1993	2.022362
1995	5.190032
1996	0.2936757
1997	0.3997482
1998	1.368435
1999	2.60564
2000	1.137284
2001	1.380996
2002	0.9200882
2003	0.4253424
2004	0.1661452
2005	0.1699488
2006	0.1643005
2007	0.1492934
2008	0.1445743
2009	0.1685484
2010	0.7607343
2011	0.8196721
2012	0.8385705
2013	0.8518047
2014	0
2015	0.8475366
2016	0.7498013
2017	0.7115112
2018	0.7356356
2019	0.6851465
2020	0.9465989
2021	0.724687