Year	annual %
1964	2.7999999989998
1965	0.389105059342261
1966	1.55038759593052
1967	2.0992366421952
1968	1.58878504672939
1969	3.49586016559325
1970	0.177777777777795
1971	4.47499999975001
1972	4.33117970783491
1973	16.5137614681954
1974	21.4370078736641
1975	34.5761063381485
1976	31.5586605641125
1977	11.3990111699532
1978	-1.58360185022085
1979	1.08156690288337
1980	4.16926655363289
1981	2.79898218829486
1982	1.02103960396038
1983	0.191424196019035
1984	-1.55903706534203
1985	-3.0587687291366
1986	-3.20333146472299
1987	-1.54711673699019
1988	0.907563025210514
1989	1.03264490339738
1990	2.07715133531159
1991	4.86111111111136
1992	-0.0770060064690777
1993	1.05579531442694
1994	0.564325478533144
1995	4.8684310305603
1996	1.22206988451309
1997	0.05715470377076
1998	-0.371269734983814
1999	-1.33376350229422
2000	-1.12499477854774
2001	-1.12094477457175
2002	0.24718651429923
2003	0.612194395125212
2004	0.515506766998081
2005	0.479230397826084
2006	2.20902407871182
2007	4.16782330119979
2008	9.87024791275994
2009	5.05722314693633
2010	5.33941680637454
2011	5.82621608838862
2012	2.86626887489915
2013	3.53252470694918
2014	2.23629031536978
2015	1.20607322150109
2016	2.06884036053473
2017	-0.838194579675018
2018	2.45814158007532
2019	-2.09333333333329
2020	3.44545825956692
2021	3.06328988941547
2022	2.4740737192537
2023	2.32708518362692