Year	base year varies by country
1980	30.57218253489343
1981	33.500378590029506
1982	39.327216255814015
1983	43.481671849094674
1984	47.29353343847084
1985	49.027625497395114
1986	57.702277388429
1987	61.71973218023863
1988	65.05976206492454
1989	67.3920628272572
1990	68.97261583298337
1991	72.27807246709696
1992	69.30321924690273
1993	103.50719009137421
1994	73.31159423348525
1995	72.1775376961978
1996	71.78335019376986
1997	71.18375000804019
1998	70.94457930656876
1999	76.3449362172236
2000	70.31284381134778
2001	73.93770645473742
2002	73.66915814581566
2003	77.29449089369108
2004	72.39978093358275
2005	71.10028945070513
2006	74.39918000375714
2007	88.21392983779971
2008	91.48908696362042
2009	93.27729445626763
2010	93.88771544157534
2011	96.46684938310412
2012	97.12051594769171
2013	98.5042504021875
2014	98.40543095846898
2015	100
2016	101.67992479299215
2017	102.99862564373556
2018	104.75389852589814
2019	105.48180320368041
2020	105.86803584550863
2021	107.29714965671515
2022	115.39498412139109
2023	119.84611377906793