Year 2010 = 100 1961 3.62839488446606 1962 3.72472395219525 1963 3.7504117035897 1964 3.94949177689669 1965 4.03297696892865 1966 4.14857185020367 1967 4.12716539070831 1968 4.19780670704304 1969 4.37119902895558 1970 4.49107520212966 1971 4.70513979708343 1972 5.05834637875712 1973 5.65342253833281 1974 7.06608159547862 1975 7.68703063159063 1976 8.06397854005251 1977 9.24218953163023 1978 9.43245468500579 1979 10.4813012940729 1980 13.9450823916488 1981 16.804748066547 1982 19.8793825144381 1983 23.1515558345451 1984 25.8973461596518 1985 28.251544720182 1986 29.8713634731855 1987 31.235543685519 1988 33.8930225147584 1989 36.0833800106552 1990 41.5819326210445 1991 40.8254749394376 1992 44.5124798914168 1993 45.2759095332228 1994 50.745412309449 1995 49.2720047206972 1996 51.9201876030043 1997 55.4828592647656 1998 56.7139321922187 1999 56.8642922444269 2000 57.4140461853125 2001 59.6177607004864 2002 64.4171779141104 2003 64.4917924059028 2004 75.012435748632 2005 76.4052395954236 2006 79.232299784447 2007 83.651135798375 2008 93.3261482341237 2009 99.2289835848117 2010 100 2011 105.235415914784 2012 107.391709408192 2013 108.046890892727 2014 107.607338757532 2015 108.386921789764 2016 109.801066219157 2017 111.722471535674 2018 116.411976345519 2019 117.555522119693 2020 115.711178865273 2021 119.336646996638 2022 132.41818969607 2023 143.168822820284