Year Percent 1994 41.22816 1995 41.14855 1996 44.43452 1997 46.52979 1998 43.68947 1999 31.70152 2000 50.37162 2001 84.24168 2002 104.41805 2003 91.1496 2004 100.81111 2005 81.82631 2006 117.76037 2007 142.51058 2008 180.04811 2009 187.91002 2010 130.76035 2011 130.63311 2012 84.34349 2013 84.84383 2014 78.93645 2015 53.40931 2016 61.73457 2017 48.28487 2018 49.80176 2019 49.99368 2020 53.86829 2021 46.82708