Year	base year varies by country
1990	13.3313182044567
1991	14.7476405386165
1992	16.1344653138835
1993	17.7292594854192
1994	19.4615118214133
1995	21.2721018243859
1996	23.5732020363524
1997	25.6769851018687
1998	28.0429036246793
1999	29.2102458988383
2000	31.3360011580984
2001	32.9495352347231
2002	35.6222599347436
2003	38.7387319072612
2004	42.1483184756881
2005	46.5396366080859
2006	51.7879251330276
2007	59.0529646004186
2008	68.694551593865
2009	72.7337106048189
2010	78.0425061490424
2011	81.1485427512276
2012	89.6394776567337
2013	95.2445313415261
2014	97.0738252513892
2015	100
2016	105.443221715261
2017	111.213966113489
2018	115.990946497472
2019	120.480408108813
2020	124.220490570082
2021	134.184327827057
2022	197.873168993273
2023	232.538948853939