Year	base year varies by country
1960	1.0469340019563196E-14
1961	1.1107915127648228E-14
1962	1.3467322050144864E-14
1963	2.5298256908242866E-14
1964	2.6195833385199383E-14
1965	3.6399666236277414E-14
1966	3.821012033358023E-14
1967	6.059147301051546E-14
1968	9.687533443317628E-14
1969	1.1405235988327192E-13
1970	1.1081675271448872E-13
1971	1.1990782309817197E-13
1972	1.3211611635222118E-13
1973	1.5574779146559989E-13
1974	1.8415357672739497E-13
1975	2.067407826315016E-13
1976	3.254005404657061E-13
1977	4.466826868744725E-13
1978	5.736044389605552E-13
1979	1.1573618843869162E-12
1980	1.7523333220212794E-12
1981	2.3346375770504164E-12
1982	3.3498613475177416E-12
1983	5.96997124193457E-12
1984	1.13192578007595E-11
1985	1.4240861175737294E-11
1986	1.829284993473979E-11
1987	3.178700933141537E-11
1988	6.089951866007772E-11
1989	1.2804869694890203E-10
1990	2.6756454796568934E-10
1991	6.524426837292131E-09
1992	2.58061153231475E-07
1993	4.535790153366139E-06
1994	0.0012185789532063265
1995	0.006902120861647198
1996	0.05095068484352505
1997	0.14910352834145002
1998	0.18926512486677732
1999	1.0256324279040632
2000	28.00102347043779
2001	48.45849039621308
2002	63.829262469569734
2003	72.3922475086511
2004	77.00034580921663
2005	100
2006	113.32522538383942
2007	136.2979087565504
2008	164.19170732723222
2009	217.81331878498355
2010	263.0887034451735
2011	299.3730032036004
2012	317.15573627854315
2013	325.9450459687969
2014	329.183735903018
2015	325.3787715685049
2016	339.5302392816629
2017	485.7613628343467
2018	636.3406436676198
2019	673.8555041739129
2020	700.1463107037797
2021	804.9962632393147
2022	886.3525443314476
2023	1003.1022918539612