Year	Percent
1981	-2.10031
1982	0
1983	0.01276
1984	0.00119
1985	19.03521
1986	-9.01306
1987	9.82331
1988	2.21377
1989	16.27966
1990	14.00744
1991	106.30998
1992	476.51575
1993	917.78347
1994	2175.97896
1995	1825.49515
1996	4800.53164
1997	95.45302
1998	39.35935
1999	557.50111
2000	418.01899
2001	106.35213
2002	142.81121
2003	86.11286
2004	40.60593
2005	24.04152
2006	14.69989
2007	12.07114
2008	19.68161
2009	-7.41884
2010	22.42234
2011	24.13811
2012	5.73127
2013	3.75303
2014	-1.31174
2015	-3.9809
2016	27.67484
2017	31.13638