Year base year varies by country 1990 0.739215213332474 1991 22.4107216739731 1992 27.7142888614022 1993 33.3656827823327 1994 35.9612848872605 1995 40.777466053427 1996 44.6948809174592 1997 49.0651433301943 1998 55.948240954374 1999 61.1101558132379 2000 66.3449913112145 2001 71.1493700535348 2002 73.4605710670009 2003 77.3768108203141 2004 84.3801104517434 2005 92.7059753931103 2006 100 2007 109.674861856331 2008 127.441370713617 2009 135.132257341403 2010 143.427186848239 2011 158.077242075655 2012 167.946391082337 2013 175.25236226571 2014 189.960640833749 2015 204.374838360802 2016 213.756429354394 2017 222.570836064341 2018 228.487877558055 2019 240.814597252996 2020 253.798726084955 2021 262.792528183076 2022 285.860051629065 2023 316.355367715799