Year % of population 1990 0.00026064045592378134 1991 0.0010026830099330829 1992 0.0024260850873449934 1993 0.005589555456864553 1994 0.011675261382491458 1995 0.04092706175745414 1996 0.08079813202979359 1997 0.16324299918360458 1998 0.3424110825620803 1999 0.6107634249968799 2000 1.2286408463141663 2001 1.6822351766614525 2002 2.8261782721483306 2003 3.4016724578816495 2004 4.216043953200187 2005 4.884247324608712 2006 5.762820429679037 2007 7.328275726151606 2008 8.490375987092493 2009 9.677662436158746 2010 12.790507723879728 2011 15.34336419123229 2012 17.07458493731515 2013 18.962083176027008 2014 21.43475353814533 2015 24.419889334729213 2016 27.127517197314653 2017 29.89714059481731 2018 32.75021760805577 2019 39.59188762429342 2020 48.176940218496114 2021 51.94956713517148