Year	annual %
1961	0.5698893037737776
1962	5.344603915783949
1963	6.641340595844781
1964	3.621448924165975
1965	5.002752984253476
1966	8.02938110142459
1967	6.135181850637522
1968	5.483476504003519
1969	0.6062349764381736
1970	0.08200039777048573
1971	20.403699357867794
1972	1.3091485969039667
1973	22.520212661421127
1974	41.47947618788652
1975	-6.426974725670675
1976	5.642743826725919
1977	7.892973428519511
1978	-4.458922096163647
1979	26.60511619425607
1980	33.202167019321365
1981	9.909970030161674
1982	-9.719946769577973
1983	0.8352205726316839
1984	-6.504069157828212
1985	-1.2525731902970563
1986	-7.8379810011260105
1987	20.905949740934645
1988	-17.775266565868364
1989	1.0578583048137347
1990	4.702513899831047
1991	-5.127333907365724
1992	9.197110786411457
1993	1.634142482485018
1994	4.777325718741395
1995	9.58688163953974
1996	11.661940457881144
1997	10.410509033443049
1998	-6.627340298243325
1999	29.978359876922468
2000	13.306862300266204
2001	7.184874656527796
2002	27.247302775381968
2003	14.36256527297472
2004	22.605342495158155
2005	28.568503997206307
2006	19.6795130437458
2007	2.4393861682751066
2008	23.709371496227163
2009	-24.847267747377572
2010	19.278545342938955
2011	24.342753351190538
2012	5.981930503721827
2013	0.0853923422682783
2014	-1.0066040166524175
2015	-7.040707271953778
2016	4.692314318104039
2017	1.806663821783161
2018	3.5975738926426857
2019	2.429513258725862
2020	117.13285725085251
2021	-6.705127657346594
2022	23.159962232802343
2023	-8.2076140615155