Year	base year varies by country
1965	10.810065079976082
1966	11.326781118599197
1967	11.12186028993748
1968	12.202523486971781
1969	13.361131594873035
1970	12.897209873681215
1971	13.378537038008176
1972	13.982370450932061
1973	15.117113390962803
1974	16.750932746281368
1975	19.29377235513229
1976	20.862218665102162
1977	21.8571824083889
1978	23.271837293290996
1979	26.242097111433328
1980	29.102426519124965
1981	31.125860446133235
1982	38.33671975564029
1983	43.10439732038746
1984	44.046580132706026
1985	45.42612578553251
1986	46.926404450056786
1987	45.88865790444078
1988	47.11703289356929
1989	50.26253420927921
1990	49.07710241600921
1991	48.142913245364234
1992	47.43394563337502
1993	47.24794977563225
1994	70.10222372764993
1995	71.6220007162479
1996	76.13150109815082
1997	73.98816983066283
1998	77.83530314814759
1999	72.6727714525147
2000	76.23745071922356
2001	77.85797858242927
2002	81.36626347684651
2003	78.57297845729681
2004	80.97041938464125
2005	83.20159397580493
2006	85.33798923152321
2007	90.49809789053359
2008	102.23507596087896
2009	94.73323274577501
2010	95.91537104248071
2011	100.91812157601237
2012	106.40601663413017
2013	104.1945137255083
2014	100
2015	99.31775832459314
2016	98.17842403407863
2017	98.68284653303526
2018	99.06273153338492
2019	100.79984482495658
2020	101.25867098584042
2021	103.305959422681
2022	114.37432073275878
2023	112.37098723727085