Year Number 2004-01-01 1073.763408 2005-01-01 1185.425662 2006-01-01 1281.198154 2007-01-01 1329.416980 2008-01-01 1303.401327 2009-01-01 1219.309841 2010-01-01 1191.420014 2011-01-01 1279.434275 2012-01-01 1275.920608 2013-01-01 1239.745925 2014-01-01 1287.293774