Year	annual %
1961	0.025230939868445636
1962	-0.33015567129986034
1963	-0.37445416169192786
1964	-0.4299782117747293
1965	-0.47615153722444575
1966	-0.5282774601144324
1967	-0.5945474409091311
1968	-0.6700388044673619
1969	-0.5108858417550153
1970	-0.4331994808159271
1971	-1.0381435533737
1972	-1.269541943323247
1973	-1.4416969040900975
1974	-1.6011557388944733
1975	-1.7394933056537152
1976	-1.8771638656671263
1977	-1.9984995423585319
1978	-2.1500948393270285
1979	-2.3130692535309407
1980	-2.4911942448377036
1981	-2.6379839668991276
1982	-0.5887928287901443
1983	-0.6284002324358341
1984	-0.6850730603347072
1985	-0.7360584205657436
1986	-0.795967331858555
1987	-0.8522220692780006
1988	-1.3450495177939845
1989	-1.434774433921505
1990	-1.5502309947188826
1991	-1.6624251618067936
1992	-1.7730643163723598
1993	-1.8676232243762045
1994	-0.859887749663108
1995	-0.857089750965211
1996	-0.9394377788155508
1997	-0.9876366609562938
1998	-1.0193391409705574
1999	-1.0456616140489414
2000	-1.052991822109065
2001	-1.0258609135552175
2002	-1.0239648309909728
2003	-1.0111618261147672
2004	-0.97345935567022
2005	-0.9001535092942554
2006	-0.8196461672243858
2007	-0.7358891221620282
2008	-0.6805876354661691
2009	-0.5923532634236477
2010	-0.4952450176189387
2011	-0.4157353705228282
2012	-0.4166562602426114
2013	-0.4785479594972066
2014	-0.5890712813592383
2015	-0.7683205294220926
2016	-0.9776797609490298
2017	-1.1571491469306139
2018	-1.2479157484041754
2019	-1.262816448160516
2020	-1.2855710858070621
2021	-1.2996374462523461
2022	-1.2905432112920108
2023	-1.2529600819603348