Year % of population 1990 0.00207254077112048 1991 0.004020833145048375 1992 0.0058202434752506645 1993 0.008255953300354512 1994 0.013511151208632086 1995 0.03176987805816128 1996 0.08556825556558108 1997 0.23350027987625294 1998 0.4984783202005179 1999 0.9419800806013953 2000 1.7276123407684139 2001 2.1076205872312275 2002 3.777055162014167 2003 5.134509472691724 2004 8.409274833630782 2005 9.77581404056184 2006 11.790598745930563 2007 15.07487562722693 2008 18.781885211106687 2009 21.653170045372455 2010 24.858150671089312 2011 27.770041989896782 2012 31.213209809802056 2013 35.15209146588395 2014 40.07956257379735 2015 44.35475050077792 2016 48.408764652092145 2017 54.88353482600375 2018 60.225838481738144 2019 67.3339172996132 2020 72.78925746989324 2021 77.37353453967552