Year	annual %
1961	-0.6380902211784348
1962	-0.7535302455845141
1963	-0.8419986742727233
1964	-0.8640581097556533
1965	-0.9167230166829718
1966	-0.973817651535838
1967	-1.0755091601902136
1968	-1.3297245838170526
1969	-1.7776850042762946
1970	-2.201059591117877
1971	-1.6658885986638756
1972	-1.0163462918606894
1973	-0.9797279643931173
1974	-1.1524485851954072
1975	-1.231247812517653
1976	-1.536224403104388
1977	-1.7805043142397103
1978	-1.762081083317337
1979	-1.5690889336766725
1980	-1.5081900757129625
1981	-1.209540701963787
1982	-1.0217930238832778
1983	-1.0400569641990114
1984	-1.316447180958754
1985	-1.5878665408401196
1986	-1.6578947728599192
1987	-1.2964762685130031
1988	-0.8462442153957348
1989	-1.1618387953865077
1990	-1.6368630385454317
1991	-0.8264509849893424
1992	-0.7471052354670851
1993	-0.9744344226056842
1994	-1.1379674621943212
1995	-1.46771285634854
1996	-1.4759751363549516
1997	-1.1856584698916746
1998	-0.9541221467574557
1999	-0.6598230341677533
2000	-0.3783371709699526
2001	-0.41266178137919096
2002	-0.8636406590917541
2003	-1.0530174728794353
2004	-0.8707629647094683
2005	-0.16441804564743623
2006	0.5790963003201278
2007	0.7717234225919041
2008	0.1049918966351921
2009	-1.431615534355749
2010	-1.1191241752769545
2011	0.10270205084167451
2012	0.33183711887069245
2013	0.4278081391078393
2014	0.5756177162765879
2015	0.5195566601486641
2016	0.8314268078226413
2017	1.7406510379537772
2018	2.032148066024478
2019	1.5189014156276275
2020	0.9209616072037509
2021	0.8815336904681715
2022	1.7183081912170477
2023	2.155162936427437