Year years 1990 66.276 1991 66.632 1992 66.842 1993 67.006 1994 67.808 1995 68.006 1996 68.484 1997 68.884 1998 69.119 1999 69.334 2000 68.321 2001 67.163 2002 68.959 2003 68.788 2004 68.795 2005 70.19 2006 69.694 2007 69.925 2008 70.301 2009 70.481 2010 70.916 2011 71.105 2012 71.279 2013 72.091 2014 69.816 2015 72.366 2016 72.429 2017 72.729 2018 72.464 2019 73.128 2020 72.164 2021 71.094 2022 71.024