Year	annual %
1961	2.85593095553982
1962	2.89684075195413
1963	2.95732602707451
1964	3.00740238183342
1965	3.03925740534669
1966	3.07473858983879
1967	3.12152351188468
1968	3.1740867014152
1969	3.14858914783766
1970	3.05760883729459
1971	2.85805667408401
1972	2.50432806458679
1973	2.3652155315154
1974	2.50360643586344
1975	2.61057799275555
1976	2.64370663791767
1977	2.6545314661956
1978	2.65455861076249
1979	2.4075044557169
1980	2.07278335441896
1981	2.0824376720328
1982	2.30660639946277
1983	2.48246551102789
1984	2.69724585778288
1985	2.83913598045199
1986	2.93473252294644
1987	3.09874221855551
1988	3.17371581667772
1989	3.21778555676955
1990	3.22480181545626
1991	3.27394166931985
1992	3.40830678772436
1993	3.45516304809416
1994	3.3450797464942
1995	2.72433658029574
1996	2.71295214058182
1997	2.90961314833138
1998	2.97547135684212
1999	3.23746779364357
2000	3.13535567369772
2001	3.04478942602344
2002	3.10813979944162
2003	3.12028672115224
2004	2.95848070670913
2005	2.90623167656329
2006	2.91502197083402
2007	2.93354099227772
2008	2.92692289648893
2009	2.9156563947553
2010	2.91517454447869
2011	2.90711158037377
2012	2.89370786919312
2013	2.8767478792897
2014	2.96898607347744
2015	3.09130915647166
2016	3.33499474701031
2017	3.49646846553214
2018	3.40127795850029
2019	3.39509056427404
2020	3.33280874526165
2021	3.211427903809
2022	2.99862763969552
2023	2.78160960502728