Year	annual %
1961	-2.2851075674326466
1962	5.5834585977509334
1963	4.17784147129143
1964	2.909895767494703
1965	3.9934807759826896
1966	-1.2922129653746168
1967	-7.80443446541895
1968	3.8876182385823626
1969	10.576413570454847
1970	9.766709036947958
1971	5.258351873115984
1972	1.4865248330680174
1973	1.5833137919262725
1974	8.435423495042713
1975	-2.4268659592464843
1976	6.383295029658825
1977	2.4838356914846713
1978	-2.4670436087070584
1979	3.8355932998831292
1980	2.9621228249825435
1981	-8.492012505516684
1982	-2.945577102408876
1983	-6.846872100978089
1984	-3.4217552205128356
1985	1.8533065023727886
1986	-2.3361610973819893
1987	-0.7490999578608495
1988	1.3936664019748264
1989	-1.2082929984317303
1990	2.4545267646153235
1991	-8.049070991368595
1992	-2.276352523252001
1993	-4.480078603586719
1994	-6.078733178318444
1995	-2.882677402453538
1996	1.130163175623295
1997	2.3167469100046674
1998	2.6583325762587435
1999	0.8197692567553503
2000	3.144412818783991
2001	1.818369226146018
2002	2.27865879486086
2003	-1.412246000071761
2004	8.625951842722344
2005	3.32271763035223
2006	3.318349195854637
2007	3.545744547276456
2008	2.5721772323387313
2009	0.5602649761000293
2010	4.419657141554012
2011	-2.3461371794818717
2012	3.036510924562279
2013	1.012182147314661
2014	-0.239600469060548
2015	-1.1702689536068505
2016	-0.09624043185758069
2017	0.2864052217653352
2018	0.492910370759688
2019	0.26680024129588276
2020	-8.452702219596802
2021	2.269512206823947
2022	-0.2564352116979194
2023	-0.6629210982226681