Year	base year varies by country
1960	7.60996713560922E-11
1961	8.399845393810633E-11
1962	1.153520785756237E-10
1963	1.4525021306130088E-10
1964	1.7531354350253155E-10
1965	2.1969359627313256E-10
1966	2.798646642906453E-10
1967	3.5795447799428346E-10
1968	3.978404800573032E-10
1969	4.3241694565429364E-10
1970	4.605699065752383E-10
1971	6.083379321783286E-10
1972	9.922345145622642E-10
1973	1.6264937608231302E-09
1974	2.1492642000947918E-09
1975	6.4210331825872615E-09
1976	3.398007698751974E-08
1977	8.897652733629104E-08
1978	2.332078373774022E-07
1979	5.800438305451931E-07
1980	1.0967162542769096E-06
1981	2.2599683493748627E-06
1982	6.973734465683302E-06
1983	3.35108753837544E-05
1984	0.00023722528804001803
1985	0.0017039027289937282
1986	0.003038947332046362
1987	0.006956731577989344
1988	0.03345299677097537
1989	1.038277451290718
1990	23.18366309958777
1991	54.318130912903364
1992	60.39192910387978
1993	59.78693897859615
1994	61.45034355996789
1995	63.44364725576928
1996	62.96900671953346
1997	62.687536239456556
1998	61.85320531872753
1999	61.0561550543367
2000	61.22244544168167
2001	60.63423623717226
2002	73.25411514255855
2003	82.71446313400266
2004	99.99999991133663
2005	111.3395481657341
2006	125.6445172211226
2007	143.29726663475876
2008	173.027631260709
2009	201.08533187649633
2010	239.79835998430337
2011	288.93103269686253
2012	353.5106627339101
2013	440.34362250246033
2014	623.3376290473192
2015	789.1974533283643
2016	1107.4854405450292
2017	1374.7982251863625
2018	1960.332381047283
2019	2983.3487741367467
2020	4188.870519880257
2021	6273.900823582613
2022	10497.747291389109
2023	24951.372235202387