Year	annual %
1961	2.05814013101785
1962	2.07770102124927
1963	2.11739416822418
1964	2.1221826035984
1965	2.07102771404978
1966	1.99783293579813
1967	1.93144830145354
1968	1.88095584656013
1969	1.84673329391065
1970	1.82016926546559
1971	1.74433024147105
1972	1.57826871305972
1973	1.39314016134818
1974	1.23117178546334
1975	1.06935882271993
1976	0.905643059342413
1977	0.743867722263558
1978	0.592089401589531
1979	0.458608286902087
1980	0.351269965517945
1981	0.401401173121594
1982	0.6105467679555
1983	0.761228530374388
1984	0.807460498379807
1985	0.826190428931533
1986	0.848060205315963
1987	0.889299371946265
1988	0.949519196209417
1989	0.971284736225984
1990	0.940667100149927
1991	0.816593021196379
1992	0.650643577416863
1993	0.528896871696659
1994	0.425927555927014
1995	0.362117961970617
1996	0.331918454121758
1997	0.319637304062581
1998	0.323431497801001
1999	0.32877557025507
2000	0.32194458830191
2001	0.299718119482692
2002	0.277231369135209
2003	0.260768627095581
2004	0.232575967917871
2005	0.185302193413535
2006	0.128992465660705
2007	0.0821729969258322
2008	0.0596278925041623
2009	0.0582984063263004
2010	0.0640748450108155
2011	0.0734247089104104
2012	0.0935951943767368
2013	0.108603882669157
2014	0.0922325673162479
2015	0.069407446002465
2016	0.0186756792498581
2017	-0.0494478967755684
2018	-0.0720152370566522
2019	-0.101983052203958
2020	-0.141475202325743
2021	-0.393012541562472
2022	-0.393269982974889
2023	-0.158363803836215