Year	annual %
1961	3.1098509758004
1962	3.12553269779522
1963	3.15071857358442
1964	3.08501275877978
1965	2.9856452129641
1966	2.80624867654198
1967	2.51274747948943
1968	2.26811147090461
1969	2.14548604213848
1970	2.04528346551456
1971	1.94556986353039
1972	1.82670805532957
1973	1.68775643327703
1974	1.61137046530022
1975	1.66504153096409
1976	1.85877646358817
1977	2.13888629021089
1978	2.36172243321419
1979	2.45458893491966
1980	2.46949784674888
1981	2.45918804888992
1982	2.44286020771579
1983	2.42628058798333
1984	2.41694657402892
1985	2.35055904777605
1986	2.06752532908356
1987	1.61880236236793
1988	1.2628298852371
1989	1.08440864512957
1990	0.994899825536046
1991	0.562463230476735
1992	0.257938885422665
1993	0.296816893960149
1994	0.203164498258415
1995	0.182306473098269
1996	0.540288729079706
1997	1.00356220718326
1998	1.15847943080594
1999	1.15735741455603
2000	1.09752051437681
2001	1.05280543999033
2002	1.01360189605196
2003	0.985257329508455
2004	0.972529404319471
2005	0.94499091797119
2006	0.928331143605677
2007	0.853009376352656
2008	0.680664088099223
2009	0.517432196093315
2010	0.419141607071656
2011	0.351360475814814
2012	0.297238780271001
2013	0.262426487072664
2014	0.230397589525045
2015	0.178965105930181
2016	0.127589742794731
2017	0.0705348376627642
2018	-0.00250269992369218
2019	-0.0577971466911964
2020	0.212846220439299
2021	0.45397664568484
2022	0.556091460082176
2023	0.708309568380842