Year % of population 1990 0 1991 0 1992 0.000501420462203968 1993 0.0017970039655460734 1994 0.0036408614670173285 1995 0.009752076068499562 1996 0.029052033714669884 1997 0.06251449272374206 1998 0.14176095366598798 1999 0.2440326936019889 2000 0.3770399605735614 2001 0.44862034754460023 2002 0.7041788016688113 2003 1.0725586013610648 2004 1.4550885404986478 2005 2.3323716974781825 2006 3.1936784488700187 2007 4.358853500439242 2008 5.245930186472176 2009 6.713997098169685 2010 8.397790702818785 2011 9.782272391695441 2012 11.788677059584447 2013 13.630740903444588 2014 15.827875212259643 2015 18.392262720133115 2016 20.72783107308392 2017 23.941494744791626 2018 26.97740380454616 2019 30.05076428828618 2020 34.42563317306921 2021 38.43999981977277