Year	annual %
1961	2.4278336764386665
1962	2.482948365367605
1963	2.514793933268905
1964	2.5552257821127995
1965	2.588824351585856
1966	2.5866068818212824
1967	2.5983502869226527
1968	2.6373074801359024
1969	2.6596910388878996
1970	2.686413008441548
1971	2.7012588181828647
1972	2.691515366940763
1973	2.7430042125494083
1974	2.8268895939859107
1975	2.8602501903193485
1976	2.8585789638366066
1977	2.823728361990405
1978	2.9321969396901864
1979	3.0240697675906034
1980	2.9168311003956404
1981	2.949740674384344
1982	3.0357443767176733
1983	2.8947425226991896
1984	2.808719440595681
1985	2.863662248302589
1986	2.8973936272210494
1987	2.9221598991837254
1988	2.8440282568285937
1989	2.813969358175001
1990	2.8087026803910646
1991	2.726952544567112
1992	2.6726506525062774
1993	2.6637335254230123
1994	2.6242070523877743
1995	2.6537142964575793
1996	2.691012161722824
1997	2.624046919628924
1998	2.5977419602529324
1999	2.618531452282639
2000	2.6504173197617433
2001	2.6745025197042054
2002	2.6889353959342657
2003	2.698229623096026
2004	2.719361893838254
2005	2.7371007911540772
2006	2.7552102618873704
2007	2.780218886345537
2008	2.793010485810669
2009	2.7917193761980883
2010	2.793794543200832
2011	2.783545650402772
2012	2.7699384479811613
2013	2.7728459057982064
2014	2.765267985492457
2015	2.7705021934094702
2016	2.7221679107045844
2017	2.676300975516014
2018	2.6807730147490076
2019	2.668133351726084
2020	2.6530079112905014
2021	2.593818809042503
2022	2.540622288421673
2023	2.535602141565164