Year	annual %
1961	-1.7862681681336312
1962	-0.8938662378906344
1963	-4.684738921879358
1964	-1.2211992395564977
1965	-0.4404299337197983
1966	1.9537501270882274
1967	2.3976407624687823
1968	19.42850983879505
1969	1.016672332127058
1970	-21.440776343051937
1971	10.546258243573646
1972	1.077145419240864
1973	11.392192968201485
1974	150.35511889423825
1975	12.061104645037716
1976	16.553522298920768
1977	8.081387456325643
1978	10.086110745782292
1979	23.098744280232467
1980	37.81410612521853
1981	11.711268008780536
1982	6.3119758728283415
1983	1.1966767822263478
1984	-0.9228134853565422
1985	-1.0388830354072809
1986	-26.870199240312147
1987	6.741467865641056
1988	-8.948645736452747
1989	8.577822506891337
1990	7.101440298219018
1991	-2.2624736499978866
1992	-0.29655913481401797
1993	-1.6642827558673758
1994	1.0948876037689672
1995	5.8183124968448965
1996	7.842932148477104
1997	3.4597673790177197
1998	-13.933814487069071
1999	14.488391243205157
2000	10.947919075559426
2001	-1.6465908587177296
2002	5.956779358023766
2003	2.3166184486136387
2004	11.056362603442807
2005	20.14965825556048
2006	11.572387767639299
2007	8.435375957329015
2008	17.68985268338585
2009	-15.713234112060675
2010	17.19127636549156
2011	15.412103777545
2012	4.012235549620286
2013	-0.8925978862071275
2014	-2.043404348727421
2015	-16.436946911286185
2016	-2.3604506257542113
2017	6.387316341321011
2018	14.73361404240245
2019	-2.0227403383349554
2020	-9.184568176990723
2021	13.300700153062834
2022	17.983945561902146
2023	-2.964886674968909