Year	annual %
1964	4.986522911051213
1965	5.840821566110398
1966	14.736203759854458
1967	16.913319238900634
1968	24.68354430379747
1969	20.812182741116754
1970	15.486194477791116
1971	9.277546777546778
1972	25.612366230677765
1973	15.52442256720939
1974	13.470993117010815
1975	17.908723281340265
1976	12.71435570798628
1977	6.563790480330363
1978	10.768916989598205
1979	18.7534524028724
1980	24.54453833630514
1981	22.446311858076566
1982	15.92699913578364
1983	11.93211717242589
1984	6.2487757100881485
1985	3.7905604719764017
1986	9.975841978115675
1987	19.81522160485851
1988	13.475330277702884
1989	22.471963505037067
1990	19.980211849610058
1991	12.445630204543617
1992	8.89534382100026
1993	8.45394041833932
1994	14.428345306221843
1995	8.49968078314535
1996	9.79032637690256
1997	10.266098560977571
1998	30.2485337480963
1999	8.514528808836701
2000	-2.0495890505175556
2001	5.857880139030299
2002	-0.33204539298763464
2003	8.052929343796153
2004	6.236051828172895
2005	6.1936534317656955
2006	19.3688281258886
2007	13.411914561780572
2008	12.048689585409257
2009	11.336808929775435
2010	8.590320534147251
2011	9.988129393333853
2012	7.225307386824607
2013	4.315656774415572
2014	3.331722821503801
2015	1.523990844424097
2016	8.0439173974027
2017	3.198556097977541
2018	3.901878870136831
2019	4.951350605159912
2020	13.19102921228946