Year	annual %
1967	8.549715009499664
1968	-8.686015140058146
1969	7.128470908287966
1970	9.069136627123626
1971	5.163358360170307
1972	3.156778667016269
1973	-1.0455081949432383
1974	20.937225136220377
1975	13.04858607506631
1976	11.693191005241516
1977	22.595401781931486
1978	6.460357407367923
1979	10.59694337202366
1980	-0.177584651213067
1981	1.5635268734140624
1982	14.48741840333902
1983	2.6830920793926083
1984	9.001606350689912
1985	39.41911043981804
1986	40.516789098044455
1987	18.49801189830127
1988	9.706149413505543
1989	13.73657242070378
1990	11.964533392046377
1991	134.0358723717475
1992	1.9500308367719867
1993	5.142322484350117
1994	3.7773965514576275
1995	3.9632505001165015
1996	8.368569565282428
1997	-5.9691194512561765
1998	5.411821203040063
1999	-2.4354943637058852
2000	2.216982612734597
2001	1.805437651633767
2002	10.391344589809279
2003	12.893941182153085
2004	94.19011413761521
2005	4.11380528257159
2006	1.3032039976521759
2007	4.414824901932619
2008	2.4758458680372684
2009	4.513305352996454
2010	5.644330860973355
2011	4.572123503691472
2012	3.8451602137207175
2013	5.933131380581912
2014	5.21172310682789
2015	9.720362426752558
2016	7.820622748609793
2017	3.9217186200013288
2018	6.951764037942581
2019	6.252206399430065
2020	2.1887589585654723
2021	7.382122877994618
2022	8.642277522213249
2023	12.922425714491652