Year	annual %
1971	16.438320568404492
1972	9.451070055512204
1973	27.960132385468043
1974	182.03829907781335
1975	-1.5901745113848165
1976	21.635763005027613
1977	18.696656475070313
1978	0.7554747958509154
1979	28.581002035354146
1980	36.08562151696714
1981	9.131668718698393
1982	-5.8164078198209666
1983	-13.280527734234354
1984	-0.9518564582029256
1985	-6.2319278509962714
1986	-22.04079475784407
1987	7.737100930953787
1988	4.684054047917627
1989	1.153999262328398
1990	9.702748614226152
1991	-4.898740312282541
1992	-0.22576292199244108
1993	-5.1457525509430155
1994	1.6026993252937558
1995	7.767197731818371
1996	6.657557524969818
1997	-4.0789743188351935
1998	-18.382171482891266
1999	15.879468199213548
2000	32.654614909167776
2001	-4.951940971178331
2002	3.0090051745119695
2003	17.17646773840866
2004	13.106784845155858
2005	30.54269981303574
2006	8.361613535489298
2007	10.969860595314216
2008	22.89956468817236
2009	-24.21810087660687
2010	6.979329893911498
2011	18.27017134243667
2012	6.3299622355519745
2013	0.767488571935985
2014	-1.482751063093204
2015	-25.12980749599285
2016	-8.976699057518431
2017	7.78756965604812
2018	12.414403526000342
2019	-4.4559142053045235
2020	-15.100420315513617
2021	22.466022129473657
2022	25.880704628300194