Year base year varies by country 1990 56.4853435777364 1991 50.0651615111854 1992 50.1722343495723 1993 49.9166164590823 1994 73.1535216897577 1995 74.1331318286741 1996 84.1875688583523 1997 84.984435210913 1998 69.8687623701152 1999 83.2775112376229 2000 106.669617508192 2001 100 2002 100.855807814236 2003 100.636829285193 2004 108.451559387584 2005 130.244328592559 2006 143.097017734502 2007 149.151970054441 2008 179.696740910696 2009 147.217390392974 2010 171.602950348521 2011 193.364311347594 2012 187.67572144425 2013 176.118791397535 2014 174.619333032414 2015 159.030764035844 2016 152.240541659403 2017 158.056590337168 2018 169.399770472992 2019 172.021206846481 2020 156.2401435054 2021 195.84437519383 2022 222.979524035881 2023 206.4448515465