Year	base year varies by country
1987	3.292317867615641E-05
1988	3.348884113238892E-05
1989	3.4777188065682096E-05
1990	4.0428163157606986E-05
1991	7.928078640585836E-05
1992	0.001481149514251081
1993	0.050856533805768524
1994	0.5355172430185536
1995	2.7622508570359914
1996	4.589359960310368
1997	5.4188314922903205
1998	6.06974249399412
1999	7.732847489081326
2000	9.859489738620178
2001	10.86524799249256
2002	11.4360800112521
2003	12.369760437830822
2004	14.26366183739718
2005	17.700642154228298
2006	20.329629228494646
2007	24.973393079605977
2008	32.22070032318327
2009	36.29015188886315
2010	41.25218717341514
2011	47.10253467968873
2012	50.86252329506598
2013	53.05408436074395
2014	61.490605601271916
2015	85.39918595364165
2016	100
2017	122.09831749780172
2018	140.89966397626844
2019	152.5185690763836
2020	168.22027077639035
2021	209.94688978426598
2022	283.2504703618001
2023	335.6740059557905