Year Percent Change From Preceding Period 2004-01-01 3.22103185790807 2005-01-01 11.65585524069620 2006-01-01 13.55797455968750 2007-01-01 17.24473912095390 2008-01-01 44.37121993405630 2009-01-01 8.47930175331148 2010-01-01 8.13398274047019 2011-01-01 33.23248591400000 2012-01-01 24.13221097454410 2013-01-01 8.07131943460952 2014-01-01 7.40425987010922 2015-01-01 10.11471741120110 2016-01-01 7.26622625698609 2017-01-01 9.92047622211101 2018-01-01 12.73106394796740 2019-01-01 9.46027621649292