Year	annual %
1961	0.37976792291879524
1962	0.24691082332466702
1963	0.14158621231930207
1964	0.08493717917313058
1965	-0.060499689526481354
1966	-0.16237569283079445
1967	-0.2350164707091654
1968	-0.33209851801746526
1969	-0.3600092095330155
1970	0.1511423600943572
1971	1.2226549824515611
1972	1.032618392218067
1973	0.9165575249029121
1974	0.875727250645759
1975	0.9480373479401999
1976	0.9122584907437263
1977	0.9677961128345766
1978	1.0253804760735512
1979	1.065572372744998
1980	0.7845849602375419
1981	0.40095247019868413
1982	0.36946315443824723
1983	0.32709708492662526
1984	0.28286047683701165
1985	0.29975393717945054
1986	0.3343310755059472
1987	0.304464142782628
1988	0.3151391413633121
1989	0.35603961110364707
1990	0.27902773136668113
1991	-0.30054420810483157
1992	-0.2562369997973312
1993	-0.3306242690087915
1994	-0.43336884649176577
1995	-0.47489909341570946
1996	-0.5170776629602842
1997	-0.4734174013496918
1998	-0.5264042310355658
1999	-0.5540863737782479
2000	-0.3801135643340515
2001	0.1409978274754351
2002	0.08150231179544358
2003	0.010863083289361001
2004	0.06959939232505134
2005	0.07338981487365283
2006	0.10867028030365712
2007	0.09315709016095446
2008	0.08565726163322289
2009	0.014133214580487637
2010	-0.030001842748685677
2011	-0.17176717755585005
2012	-0.18898915489903143
2013	-0.26505129008475886
2014	-0.2554151595489177
2015	-0.2842562340986509
2016	-0.32285543804625716
2017	-0.4538416797561092
2018	-0.5832545573080103
2019	-0.6952620327446067
2020	-0.20657393264328278
2021	-1.055567492940159
2022	-0.8721511946085954
2023	-0.7812195967763937