Year	base year varies by country
1990	7.6423398755158
1991	9.4545876101837
1992	10.8551794006377
1993	11.8857673850182
1994	12.8794920884853
1995	17.8779237186309
1996	22.6507526092554
1997	26.6675671209169
1998	30.8586567549412
1999	35.5859194822988
2000	39.392888526547
2001	41.9427938166538
2002	44.2506222745227
2003	46.144401651712
2004	49.890147232731
2005	52.8261737886288
2006	56.0523497579466
2007	59.4871212490956
2008	63.2409856145566
2009	66.5570155902349
2010	69.467530188026
2011	73.4060846718906
2012	76.7403468150886
2013	78.0479123747548
2014	81.4573331162764
2015	84.0846815017105
2016	89.1950018656993
2017	95.0529682857042
2018	100
2019	104.25944006147
2020	109.283664618319
2021	114.241528483515
2022	121.601130225191
2023	127.058694414882