Year	annual %
1961	2.025099978483169
1962	2.0463264734156894
1963	2.0512564713806682
1964	2.066759890447642
1965	2.09135855375564
1966	2.105684506419948
1967	2.12762265884858
1968	2.166186500847431
1969	2.159111299243051
1970	2.19166876865917
1971	2.1786119478394426
1972	2.11823680639003
1973	2.1415742851475557
1974	2.2370410407720414
1975	2.2338797510616786
1976	2.2020064006161704
1977	2.12650683544895
1978	2.243451908778866
1979	2.3552141332382917
1980	1.8555547706085491
1981	1.6340010386986137
1982	1.9852981073809133
1983	2.1687286909750014
1984	2.1318068569851505
1985	2.0568978888914558
1986	1.992234807369357
1987	2.0362457784084143
1988	2.055599762618982
1989	2.138487767016457
1990	2.0601636904850125
1991	2.1036277116333935
1992	2.4717718342498074
1993	2.688279083779463
1994	2.48173569650325
1995	2.4145683029593386
1996	2.5140667025873853
1997	2.383842241163819
1998	2.3497866731108985
1999	2.3814871286140544
2000	2.2741005178702522
2001	2.212892725219092
2002	2.4680502715872024
2003	2.5167836101764607
2004	2.366550384666553
2005	2.3364252986760192
2006	2.357923123335553
2007	2.347504075743757
2008	2.1822505883134795
2009	2.2381520540029243
2010	2.169811478920323
2011	2.1714030596710785
2012	2.209963625329948
2013	2.1930348748747264
2014	2.2270226834507696
2015	2.1923185968038723
2016	2.1899919162699177
2017	2.2095170028987496
2018	2.140321819413188
2019	2.077762256010246
2020	2.0419504227318157
2021	1.9614365638051368
2022	1.8704411852363876
2023	1.8440090019337987