Year base year varies by country 1991 8.453423912295249E-05 1992 0.0015922461672182794 1993 0.06367475476968049 1994 0.6949599140247472 1995 3.605174667044353 1996 6.095283333655851 1997 7.029090529274265 1998 7.610472954343275 1999 9.203676743298349 2000 11.962051746968816 2001 13.35505763223096 2002 14.022092218940868 2003 14.904975490169061 2004 16.87889158326892 2005 20.0989145278165 2006 22.5354469174526 2007 26.249626386181824 2008 32.967477224785 2009 40.1262699334627 2010 44.690763737638406 2011 49.41829363367946 2012 51.931708047878814 2013 53.46717922191206 2014 61.443245750538665 2015 86.61444396147733 2016 100 2017 117.53001599829118 2018 134.59325026372133 2019 145.58009776985804 2020 152.75105450644466 2021 171.5730634822851 2022 243.71855143131165 2023 285.39788071458673