Year	annual %
1961	0.7934195863194446
1962	1.2954857639699782
1963	3.5443435245055923
1964	3.9588353890346326
1965	-0.35833172246975664
1966	-0.9653921361309727
1967	-0.7248778422038384
1968	1.4687794552547189
1969	5.3438493408349785
1970	4.707975916496395
1971	2.4547649112461443
1972	-0.5940456067157243
1973	2.1059597138006154
1974	2.3666093458873263
1975	1.0778091373163363
1976	3.0177862949086034
1977	3.204351419842183
1978	1.32699675306975
1979	-0.8558158057345082
1980	2.608024935606281
1981	-0.5883362503012677
1982	-0.34324914437362963
1983	-0.2523755402854988
1984	0.1946930948454053
1985	1.4489649954363841
1986	1.3356734231495722
1987	1.1342147099129107
1988	4.186862645233802
1989	1.2587961713019382
1990	2.5726713297420645
1991	-0.2150292357666359
1992	1.4242627252022828
1993	0.13204771199552567
1994	1.7649599022368676
1995	2.8945659482842814
1996	4.1493783169041905
1997	1.8605953526592174
1998	2.424944146351507
1999	3.277963898448661
2000	2.1496817343333703
2001	2.2998084035480133
2002	2.528798752816641
2003	3.987236165696004
2004	5.141468230287998
2005	4.825087065582352
2006	5.131280406497879
2007	5.096279363244861
2008	2.8653661959902053
2009	4.216322687789486
2010	5.08654859786914
2011	3.015964017601064
2012	3.4657649652376534
2013	3.9805264798092423
2014	4.430423990988757
2015	4.318317590707579
2016	4.10938856325383
2017	3.8971559407311673
2018	3.91641217121132
2019	2.596873946544264
2020	-4.919979211220777
2021	5.248015741662442
2022	4.516768628955958
2023	3.942992539198258