Year	base year varies by country
1990	0.4031438450760723
1991	0.9375933697872336
1992	9.128810972095977
1993	16.87054722515022
1994	23.562925922219375
1995	30.963704368068466
1996	37.94276369920217
1997	41.707624119345226
1998	44.583158220824274
1999	47.463683894505095
2000	49.21258131567022
2001	52.55926963872724
2002	55.11242185001121
2003	57.25553115242554
2004	59.94108430335815
2005	63.49184404181597
2006	69.1925097102798
2007	77.7435886545874
2008	83.03211448774408
2009	82.7093838181761
2010	84.21664018002045
2011	88.82643739283682
2012	92.44360592289374
2013	96.1702387775993
2014	98.97419107234029
2015	100
2016	102.18730990746438
2017	105.85620733193801
2018	110.97729713999598
2019	114.97908074059131
2020	113.93569868919451
2021	120.7152404193284
2022	140.11457204211678
2023	151.1606846010965