Year	annual %
1991	1.80973228160643
1992	4.74241995134688
1993	-5.26167880735127
1994	-6.11529639727738
1995	1.98485898122631
1996	8.022152906739
1997	-2.05615120740269
1998	-0.444790661892242
1999	-3.83037476274389
2000	-2.02185034012371
2001	22.6511637038311
2002	5.7952831604108
2003	4.6815303788393
2004	-0.0808135644730754
2005	5.90332157161748
2006	-6.08968676920722
2007	14.703760686865
2008	-9.13306983327432
2009	9.36856512247563
2010	0.828075672182194
2011	-2.69287773417085
2012	-0.553582654482639
2013	9.16872352430134
2014	-0.0696832476141509
2015	-0.51775359181552
2016	-2.33810253725004
2017	-1.124441928232