Year Persons (Millions) 1992 17.048 1993 16.900 1994 15.800 1995 15.676 1996 15.481 1997 15.188 1998 14.955 1999 14.902 2000 14.884 2001 14.858 2002 14.859 2003 14.909 2004 15.013 2005 15.147 2006 15.308 2007 15.484 2008 15.674 2009 16.093 2010 16.322 2011 16.557 2012 16.792 2013 17.036 2014 17.288 2015 17.543 2016 17.794 2017 18.038 2018 18.276 2019 18.514 2020 18.756 2021 19.001 2022 19.635 2023 19.861 2024 20.079 2025 20.290 2026 20.503 2027 20.708 2028 20.915 2029 21.124