Year % of population 2000 2.29626287967983 2001 2.73502526637303 2002 3.27756273191477 2003 3.84094963487299 2004 4.42555644657335 2005 5.03075868572717 2006 5.65771078529133 2007 6.30595297889216 2008 6.97607811323751 2009 7.66777301110629 2010 8.38165836815415 2011 9.1176342829255 2012 9.87610130353659 2013 10.6563688377055 2014 11.459659449773 2015 12.2855424930426 2016 13.1335090736868 2017 14.0036092022049 2018 14.895237559752 2019 15.809382175944 2020 16.7450812444467 2021 17.7023160361058 2022 18.6814232075292