Year	annual %
1961	12.45136186770428
1962	-16.49365628604383
1963	17.265193370165747
1964	-3.53356890459364
1965	-7.0818070818070815
1966	9.85545335085414
1967	17.22488038277512
1968	16.193877551020407
1969	4.847633266005094
1970	17.246000502554654
1971	8.80125732247464
1972	6.290216677609981
1973	14.788732394366196
1974	39.12926487999139
1975	13.371755695663945
1976	15.827362674854998
1977	2.3977142183864033
1978	6.728418145729655
1979	21.616085386232548
1980	36.56974424836665
1981	50.40325852380931
1982	26.205452995616273
1983	-1.4832736315965438
1984	7.2668263389912875
1985	20.978076207426582
1986	-11.58143920396413
1987	5.961186489389058
1988	-4.50094215725461
1989	3.090479678321051
1990	18.398787817273604
1991	-4.801268744910018
1992	8.813275873158808
1993	-26.559950819284516
1994	28.19381841596909
1995	-0.051485546374664085
1996	15.696732124684331
1997	9.516052841621736
1998	-12.782909186461014
1999	19.871415903044635
2000	58.521953972296124
2001	-29.24524350843604
2002	12.685238818023075
2003	-1.7480733297814064
2004	19.98296819329191
2005	34.21453829040297
2006	47.099290948326974
2007	16.56480784390854
2008	32.96844638374674
2009	4.909432254910628
2010	31.945915077391646
2011	38.033548383218594
2012	19.860589812332442
2013	1.0549219776471714
2014	13.805375675757055
2015	-11.512905365915302
2016	-15.03190239300303
2017	-11.556923497109903
2018	-6.009807106321646
2019	13.99920261985502
2020	14.111379490379916
2021	7.330500036428103
2022	8.936343716597262
2023	9.640016167846507