Year % (cumulative) 2000 20.2600002288818 2001 21.5599994659424 2002 22.2099990844727 2003 23.4099998474121 2004 21.9400005340576 2005 23.1399993896484 2006 24.1800003051758 2007 24.2000007629395 2008 23.4833297729492 2009 25.1000003814697 2010 25.0200004577637 2011 24.0559005737305 2012 26.6700000762939 2013 27.6499996185303 2014 28.6900005340576 2015 29.6000003814697 2016 29.3999996185303 2017 28.9400005340576 2018 30.9400005340576 2019 31.8099994659424 2020 31.9500007629395 2021 33.5499992370605 2022 34.4199981689453