Evolution of the number of Users 1970 to 2022 Annual Users statistics 2020 Annual Users statistics 2019 Annual Users statistics 2018 Annual Users statistics 2017 Annual Users statistics 2016 Annual Users statistics 2015 Annual statistics 2014 Annual statistics 2013 Annual statistics 2012 Annual statistics 2011 Annual statistics 2010 Annual statistics 2009 Annual statistics 2008 Annual statistics 2007 Annual statistics 2006 Annual statistics 2005 Annual statistics 2004 Annual statistics 2003 Annual statistics 2002 Annual statistics 2001
