Annual base year varies by country
1960 5.500156969919876
1961 5.68047664597181
1962 5.758919518394084
1963 4.5873936254084855
1964 6.126032658515509
1965 5.9386307515755865
1966 6.184159052869476
1967 6.569106541321433
1968 6.993528309826585
1969 7.34034611444425
1970 7.309502018518654
1971 7.784924134189184
1972 7.218417648421265
1973 9.727370279474398
1974 16.090088706740318
1975 16.793586836498157
1976 19.25635546191038
1977 21.14264642852291
1978 21.747130353310425
1979 25.87539159538053
1980 35.39264576216057
1981 39.088369439487316
1982 45.6957224875357
1983 47.03225022390039
1984 52.680925586819974
1985 52.008689703519096
1986 41.18577807831998
1987 41.59486950646007
1988 42.68263124821205
1989 45.981155572586985
1990 53.0430064583134
1991 47.014083958250275
1992 47.1146315498614
1993 46.87459155793919
1994 68.69539030240753
1995 69.61530091344349
1996 79.05699914027574
1997 79.80530276043739
1998 65.61081121038129
1999 78.20240236886103
2000 100.16894387136152
2001 100
2002 100.85580781423627
2003 100.6368292851927
2004 108.45155938758366
2005 130.24432859255901
2006 143.09701773450152
2007 149.1519700544413
2008 179.69674091069635
2009 147.21739039297432
2010 171.60295034852135
2011 193.36431134759414
2012 187.67572144424994
2013 176.11879139753512
2014 174.61933303241392
2015 159.0307640358438
2016 152.24054165940333
2017 158.05659033716788
2018 169.3997704729923
2019 172.02120684648108
2020 156.2401435053996
2021 195.84437519382973
2022 222.97952403588064
2023 206.44485154650002
