Year % (cumulative) 1989 12.1397399902344 2000 11.6697797775269 2001 11.7199087142944 2002 12.3624124526978 2003 12.7224264144897 2004 13.7841863632202 2005 13.2879066467285 2006 15.9850006103516 2007 14.5501470565796 2008 14.7643823623657 2009 15.17041015625 2010 15.6068859100342 2011 16.6811084747314 2012 59.0122299194336 2013 17.5420017242432 2014 16.7271747589111 2015 16.6309852600098 2016 16.8859119415283 2017 17.1050491333008 2018 17.1958065032959 2019 17.4983062744141 2020 17.8804702758789 2021 18.4930610656738 2022 18.2587242126465