Year	annual %
1961	5.630419518030789
1962	5.629559106778345
1963	5.6379279156897635
1964	5.639904763905027
1965	5.629693673315203
1966	5.59263774639958
1967	5.2427019363049485
1968	5.302493929176038
1969	5.338035976382238
1970	5.400752577543423
1971	5.954553041786554
1972	6.00345222951517
1973	5.981050346418946
1974	5.955455751940993
1975	5.897987544106008
1976	5.534758816083418
1977	5.499816118674506
1978	5.471936593858511
1979	5.43393898742668
1980	5.393675001734324
1981	5.328930050799624
1982	5.284078643362352
1983	5.248277802317886
1984	5.215756913327244
1985	5.196576349144733
1986	5.1861621748732425
1987	5.195578596386869
1988	5.238803550331002
1989	5.248596195218438
1990	5.295065977627266
1991	5.324486368868705
1992	5.344259700049241
1993	5.3778594826942445
1994	4.267600089461608
1995	4.1849630311224075
1996	4.1918561266287755
1997	4.176364399373343
1998	4.145765584165969
1999	4.09781994481206
2000	4.032963512842231
2001	3.9868446649916662
2002	3.949698464803717
2003	3.915457731200838
2004	3.9066216963509786
2005	5.038220759127809
2006	5.025074125446386
2007	5.005034321640958
2008	4.977025638720233
2009	4.9359771017082075
2010	4.880600617522832
2011	4.790370464384007
2012	4.6945645278877635
2013	4.611882568867269
2014	4.544991579929906
2015	4.478469017484973
2016	4.452388915822068
2017	4.424553284605412
2018	4.369275537233902
2019	4.310794770415048
2020	4.244365288983246
2021	4.14829941294465
2022	4.085676867005899
2023	4.058519928813638