Year	annual %
1961	5.779932450381766
1962	5.841033137781168
1963	5.8693162855475025
1964	5.92465336768656
1965	5.9621334652672395
1966	5.87547703054693
1967	5.883564621698385
1968	4.7086782339132425
1969	4.710787654723238
1970	4.738132894885543
1971	4.694427315135847
1972	4.629767402788362
1973	4.581088947700224
1974	4.48078452995918
1975	4.329699428167211
1976	4.405041720974918
1977	3.8061800142270994
1978	3.5745360272317965
1979	3.365851054765512
1980	2.4362895548518755
1981	4.371537279482976
1982	5.714680674310041
1983	4.605032285990047
1984	4.404929141150646
1985	4.673753696094812
1986	4.815346553881918
1987	5.263741001871444
1988	5.745547943448169
1989	5.6473169800333105
1990	5.504532664942362
1991	6.141690358975923
1992	5.98619856403279
1993	5.283343059457231
1994	5.246762715226902
1995	4.74003025927699
1996	4.489830727274602
1997	4.405125626197906
1998	4.342247485081813
1999	4.300514967104456
2000	4.235576849374426
2001	4.181949927534379
2002	4.204416353414039
2003	4.167915794759582
2004	4.131598839098531
2005	4.095892776152614
2006	4.086275739306789
2007	4.207178147899724
2008	5.2540017284809375
2009	5.197463800800122
2010	5.210884782326646
2011	5.223891069184172
2012	5.195780333797901
2013	5.009145147447721
2014	4.957142099265377
2015	4.933553684573387
2016	4.94549465692669
2017	4.931696264825086
2018	4.879236580266594
2019	4.856728303119951
2020	4.845067620971206
2021	4.788180354563343
2022	4.714586798373265
2023	4.683949111375801