Year	base year varies by country
1990	42.688994967171
1991	46.9946860885227
1992	52.3737128089539
1993	56.2370230962744
1994	60.3297442280555
1995	62.3982202334586
1996	63.8901526383479
1997	66.3724177266047
1998	68.9111848498567
1999	71.2338553389844
2000	73.6702446165027
2001	76.4078182489106
2002	79.6091390256281
2003	82.3374666028655
2004	84.3132485271703
2005	87.1233275085975
2006	89.897807039319
2007	92.5644865865037
2008	94.1730021520957
2009	95.2071496626764
2010	95.8186564916917
2011	95.5646188167092
2012	95.193640444889
2013	97.3342168978721
2014	98.020030256249
2015	100
2016	101.716662546871
2017	103.254527340757
2018	105.126528567437
2019	106.965666976287
2020	109.10869750305
2021	111.182411058699
2022	116.739764378958
2023	125.069235650953