Year	annual %
1961	2.99983017854127
1962	2.8584740020318327
1963	2.7276074618415573
1964	2.5646561217583166
1965	2.3532001812074044
1966	2.1214100762019026
1967	1.9035064534055297
1968	1.727366500631139
1969	1.5880081604191822
1970	1.5241599522395586
1971	1.584314618511234
1972	1.491872892530261
1973	1.4515227907829078
1974	1.4303006991182161
1975	1.428035464508704
1976	1.4255801672641784
1977	1.3981461968110331
1978	1.3054564231547003
1979	1.123576136780783
1980	0.7484206693843333
1981	-0.10838326560771878
1982	-0.3055385958575893
1983	-0.460278039486066
1984	-0.6060379057115759
1985	-0.73333375740516
1986	-0.8403883547212443
1987	-0.9277456125595107
1988	-0.992677736260883
1989	-1.0375384739566726
1990	-1.0746549401395253
1991	-0.7096913832522702
1992	-0.18106569146459336
1993	-0.009586917972996841
1994	0.01095640265876766
1995	-0.019174492505370178
1996	-0.05617503007853703
1997	-0.08912269585037681
1998	-0.10796765679348297
1999	-0.13466534952530357
2000	-0.16973493319816033
2001	-0.2072834894771259
2002	-0.24045338408381003
2003	-0.7113778232297385
2004	-0.8803477454007629
2005	-0.9600540814981943
2006	-1.0429567192362876
2007	-1.1138761750687465
2008	-1.1885333992057143
2009	-1.2582993120632073
2010	-1.3225146630342424
2011	-1.3784049157608285
2012	-0.035633927948551414
2013	0.4632671609619516
2014	0.5463486408070708
2015	0.6220531667996924
2016	0.6903653694841264
2017	0.7587263491499731
2018	3.1308899713643266
2019	1.9826644959671285
2020	0.1687297397387443
2021	1.3327545314036924
2022	0.979457774769736
2023	1.146540672450242