Year	annual %
1961	0.5831468287651494
1962	0.521894961393265
1963	0.6827537349665224
1964	0.7238955192746417
1965	0.674471897123931
1966	0.7220465909865933
1967	0.9017379660482066
1968	-0.9001238504555512
1969	-2.52692410544791
1970	-2.8584406517121055
1971	1.4310304670936562
1972	1.368788682662354
1973	1.1356926428898777
1974	0.7641765564552306
1975	0.5829557086200093
1976	1.4734103532478628
1977	1.3349160955196853
1978	1.2946409764668076
1979	1.3115504650113552
1980	1.3331889978182832
1981	1.0984108286235856
1982	1.105444942112476
1983	1.0985166350681541
1984	1.098093990749431
1985	1.1100410614915008
1986	1.126946735292934
1987	1.1208147579036678
1988	1.1116757150357313
1989	1.1084728431786155
1990	1.1200756339485913
1991	1.1540456112086444
1992	1.1673635967826124
1993	1.1849640120908183
1994	1.239428578662031
1995	1.0675218658750423
1996	0.8239957355735789
1997	0.7442656580943177
1998	0.662386492226911
1999	0.5884063913941883
2000	0.5061276687381078
2001	0.425758879677554
2002	0.33877520661869964
2003	0.41124862720957517
2004	0.5047370445583037
2005	0.43902664216567755
2006	0.3609313191167968
2007	0.30234779898308456
2008	0.26598493517033767
2009	0.06991948809220994
2010	-0.032341526801958266
2011	-0.061727336492677295
2012	-0.04127507501463571
2013	-0.0023026563393377187
2014	0.03433989716836827
2015	0.0623260459787965
2016	0.01740017294149855
2017	-0.04087782474836685
2018	-0.10205274845238163
2019	-0.1622462709939482
2020	-0.2204209480391291
2021	-0.29326445654099154
2022	-0.3614221425811632
2023	-0.426921399196889