Year	base year varies by country
1965	2.0681974863445934E-05
1966	2.0712101785185916E-05
1967	2.0885547201336676E-05
1968	2.0883320003554606E-05
1969	2.1627581527500953E-05
1970	2.1572115202664346E-05
1971	2.2159846358398583E-05
1972	2.1907771871857492E-05
1973	2.19231677290971E-05
1974	2.23179690648151E-05
1975	2.2516021014952947E-05
1976	2.2581961637872396E-05
1977	2.2907175036269695E-05
1978	2.2981425322213798E-05
1979	2.361040623138198E-05
1980	2.384318359251366E-05
1981	2.4654733508388623E-05
1982	2.5546297751925796E-05
1983	2.4869529174595397E-05
1984	2.5018764073054793E-05
1985	2.3840743831207534E-05
1986	2.5407069470716962E-05
1987	2.6001135260835336E-05
1988	2.5326556455669853E-05
1989	2.691588785046729E-05
1990	3.290339563042906E-05
1991	5.3379298840668355E-05
1992	0.0007528129572632323
1993	0.11702041107622037
1994	7.186778176025488
1995	18.88210154491111
1996	27.007120915945265
1997	28.772029562251277
1998	30.768900869991423
1999	33.762358546754015
2000	35.34183285572256
2001	37.2412253780481
2002	39.445561316262825
2003	40.79697027439024
2004	44.2376621037464
2005	47.74796614347933
2006	51.78138259922647
2007	56.683789192795196
2008	62.12108382726503
2009	60.79432144667906
2010	70.4641618681004
2011	76.92693135261001
2012	77.1509167842031
2013	76.6486913060634
2014	80.16679302501896
2015	84.47769953051643
2016	86.3994138085896
2017	92.91975724881996
2018	96.15784008307374
2019	100
2020	106.84793338769904
2021	117.77803638620583
2022	127.35980981680883
2023	130.51525600156137