Year	annual %
1961	5.036215420856394
1962	5.164750948562386
1963	5.24842518590998
1964	5.327679936422697
1965	5.3770687452002335
1966	5.309560095337673
1967	5.496390907244859
1968	5.5467913384934775
1969	5.556004501638483
1970	5.340492430456777
1971	5.178960924166674
1972	5.226537119288068
1973	5.285116174376327
1974	5.234127944653167
1975	2.480307832415491
1976	5.286578854488823
1977	5.282039920785181
1978	5.459733817560803
1979	5.279704380182508
1980	5.300815220766509
1981	4.739192963577693
1982	4.149875487325417
1983	4.464364842938977
1984	4.649591193090586
1985	4.7060218303449375
1986	4.620108148909381
1987	4.564398530872936
1988	4.477145371244191
1989	4.358749495990665
1990	4.242120833899762
1991	3.980052017198517
1992	4.057734534542561
1993	4.165752844011422
1994	4.040503366666613
1995	3.875446663313369
1996	3.641823003499738
1997	3.640091087052852
1998	3.656612067115674
1999	3.6581831732475507
2000	3.6277307624313266
2001	3.801223372950858
2002	4.0094644992648085
2003	4.020439903254783
2004	3.9036061650924836
2005	3.920748138591861
2006	3.9662465468442747
2007	3.8098814226236613
2008	3.923932895058698
2009	3.8504280653746576
2010	3.9073107400697182
2011	3.798597769110529
2012	3.671340329808544
2013	3.5169515646964697
2014	3.5125158077493808
2015	3.7223771183775938
2016	3.8572429099654926
2017	3.9004643198786937
2018	3.897184706351254
2019	3.9239813235262915
2020	3.9135663492509707
2021	3.8673754737516646
2022	3.8216554801505396
2023	3.825847789204147