Year	annual %
1961	2.57665301024161
1962	2.58589066220009
1963	2.59093803649183
1964	2.59076242411221
1965	2.60441373917136
1966	2.60001494349786
1967	2.59405221297984
1968	2.59888886664427
1969	2.5946683187612
1970	2.60563965542373
1971	2.58423377063573
1972	2.58088631257981
1973	2.62253593448119
1974	2.5402686649413
1975	2.45319044659147
1976	2.46424901553967
1977	2.63529443769448
1978	7.11670330361566
1979	12.4069773209979
1980	8.56038552467328
1981	0.722306597449164
1982	0.283795339405205
1983	3.15394069157466
1984	3.62116697816184
1985	4.02552664192144
1986	4.1063094623835
1987	3.54671985212476
1988	0.0343193215769438
1989	-1.76229439085998
1990	-0.517042260764541
1991	-3.88044488916682
1992	-4.62911660490178
1993	2.95201018141555
1994	4.99492766653047
1995	3.54431690987324
1996	3.56249934564789
1997	3.44437390627736
1998	4.08574876698392
1999	3.98581078951555
2000	3.94049698165867
2001	3.92673917655211
2002	3.68355422936353
2003	3.62260954076201
2004	3.61359093578303
2005	3.40031804628923
2006	2.98984286765814
2007	3.04199150056875
2008	2.89679033014887
2009	2.46112222974988
2010	2.49721206017534
2011	1.56901447012171
2012	1.81282104868689
2013	3.25938851032774
2014	3.49209773142402
2015	3.35915033288915
2016	3.77095438271416
2017	3.91978477697357
2018	3.61305895751929
2019	3.63316490449428
2020	3.41819734760827
2021	3.14623658777376
2022	3.06938435160534
2023	3.05481740638644