Year	annual %
1968	3.708410196486895
1969	0.23099941952482084
1970	6.136954862558881
1971	2.5689960235582845
1972	5.844016430955094
1973	-1.455115801929793
1974	-1.5288261023840022
1975	11.625049137451967
1976	13.623438533665052
1977	6.348647193936046
1978	-1.4634763319916715
1979	10.395677210595707
1980	-4.325839868997903
1981	1.5088042968527162
1982	-7.3784330460582055
1983	1.8208737723150392
1984	-0.2870111561966411
1985	20.28663494071307
1986	2.692620880945711
1987	-0.13916428907798206
1988	7.389721044324247
1989	4.177388109442532
1990	-2.5023951034776104
1991	11.7452037933746
1992	-3.2186624903075227
1993	3.17216817730322
1994	3.7799340510106703
1995	0.9210223976916012
1996	7.055785404122659
1997	4.829024339348038
1998	7.5716676399028415
1999	5.70094365419142
2000	-0.06083497181312225
2001	15.376239457917421
2002	3.106308252056863
2003	9.119041995324295
2004	1.5599986605348874
2005	6.534778774812878
2006	4.662186877583224
2007	3.4936168125374394
2008	4.773145081429746
2009	4.80632226697864
2010	5.313935278958752
2011	3.213133780443073
2012	-0.83673463153076
2013	2.2950682896261725
2014	7.084683880565265
2015	6.171800024249777
2016	5.852299199414148
2017	5.30545608438166
2018	4.746484327245611
2019	4.756160807708085
2020	-1.2354504470769996
2021	3.052613569421254
2022	3.474951711067348
2023	5.236577527785187