Year	annual %
1961	-4.297526047168802
1962	11.333798368392053
1963	-9.820444413263544
1964	-12.464992682669674
1965	7.009529255061267
1966	7.0089108227525685
1967	6.916017510043005
1968	7.013780927582289
1969	11.007370149100026
1970	6.001425246536513
1971	1.206640701331409
1972	0.2630682667455204
1973	3.438088140670942
1974	1.4098235736852587
1975	-2.1138254244175982
1976	19.50457717250123
1977	1.9941094812189135
1978	9.150840815739187
1979	11.869908038006002
1980	8.951612329576108
1981	5.436199478740505
1982	1.8108464472452255
1983	5.980349934461387
1984	-4.240773277592012
1985	4.402748332660138
1986	5.472137487696372
1987	-0.024036108851419158
1988	4.498824993255468
1989	-0.03653427319059688
1990	-2.3992910975791943
1991	-2.514379652689115
1992	5.8727252416430815
1993	-8.108691881639373
1994	-50.2480671067105
1995	35.224078313289766
1996	12.745695766174435
1997	13.849752483568437
1998	8.858669492299697
1999	4.35188832339955
2000	8.370885131907599
2001	8.484557799341829
2002	13.192071987218881
2003	2.2024081417710875
2004	7.447679567978582
2005	9.377889524455483
2006	9.22706782580049
2007	7.6332843419623515
2008	11.161263870130966
2009	6.248265246025753
2010	7.3346547866703276
2011	7.958385418603029
2012	8.64150670706853
2013	4.719848831253515
2014	6.167160273486587
2015	8.856864687101094
2016	5.970741188400382
2017	3.9181656502967
2018	8.516468306006814
2019	9.447391589758979
2020	-3.3736937700378604
2021	10.85796718762792
2022	8.157734402965673
2023	8.241286965066834