Year % (cumulative) 1986 46.5653305053711 1990 64.2317047119141 1991 51.1507682800293 1992 66.4846496582031 1993 68.2612152099609 1994 68.703369140625 1995 69.871223449707 1996 70.6338577270508 1997 72.4576416015625 1998 73.1770248413086 1999 73.9011535644531 2000 75.0411605834961 2001 71.4653015136719 2002 77.001708984375 2003 78.093620300293 2004 78.5952529907227 2005 79.5366516113281 2006 79.706657409668 2007 80.7910842895508 2008 81.31103515625 2009 81.8826217651367 2010 82.5238571166992 2011 82.7580795288086 2012 83.4855422973633 2013 84.2044219970703 2014 84.649528503418 2015 85.32666015625 2016 84.0237121582031 2017 86.0090179443359 2018 86.6985855102539 2019 87.0673599243164 2020 87.7608032226562 2021 85.8831787109375 2022 88.6919403076172 2023 89.0727386474609