Quarter National Currency 1998-01-01 10315.5750079290 1998-04-01 11498.1693625119 1998-07-01 11289.5857913099 1998-10-01 12626.7554709800 1999-01-01 11096.8322232794 1999-04-01 12271.9771646051 1999-07-01 12192.8271487472 1999-10-01 13556.0697748176 2000-01-01 11941.0000000000 2000-04-01 13227.0000000000 2000-07-01 12963.0000000000 2000-10-01 14717.0000000000 2001-01-01 13052.0000000000 2001-04-01 14391.0000000000 2001-07-01 14117.0000000000 2001-10-01 15908.0000000000 2002-01-01 14083.0000000000 2002-04-01 15599.0000000000 2002-07-01 15268.0000000000 2002-10-01 17133.0000000000 2003-01-01 14986.0000000000 2003-04-01 16529.0000000000 2003-07-01 16088.0000000000 2003-10-01 18096.0000000000 2004-01-01 16231.0000000000 2004-04-01 17223.0000000000 2004-07-01 17190.0000000000 2004-10-01 19183.0000000000 2005-01-01 17067.0000000000 2005-04-01 18112.0000000000 2005-07-01 18203.0000000000 2005-10-01 19963.0000000000 2006-01-01 18270.0000000000 2006-04-01 19300.0000000000 2006-07-01 19305.0000000000 2006-10-01 21269.0000000000 2007-01-01 19687.0000000000 2007-04-01 20740.0000000000 2007-07-01 20721.0000000000 2007-10-01 22641.0000000000 2008-01-01 21632.0000000000 2008-04-01 22246.0000000000 2008-07-01 22181.0000000000 2008-10-01 24309.0000000000 2009-01-01 22108.0000000000 2009-04-01 22796.0000000000 2009-07-01 23091.0000000000 2009-10-01 25418.0000000000 2010-01-01 22738.0000000000 2010-04-01 23504.0000000000 2010-07-01 23600.0000000000 2010-10-01 25591.0000000000 2011-01-01 23372.0000000000 2011-04-01 24116.0000000000 2011-07-01 24107.0000000000 2011-10-01 26211.0000000000 2012-01-01 24131.0000000000 2012-04-01 24627.0000000000 2012-07-01 24439.0000000000 2012-10-01 27055.0000000000 2013-01-01 23985.0000000000 2013-04-01 24877.0000000000 2013-07-01 24735.0000000000 2013-10-01 26525.0000000000 2014-01-01 24931.0000000000 2014-04-01 25569.0000000000 2014-07-01 25279.0000000000 2014-10-01 27261.0000000000 2015-01-01 25497.0000000000 2015-04-01 26408.0000000000 2015-07-01 26163.0000000000 2015-10-01 28258.0000000000 2016-01-01 26683.0000000000 2016-04-01 27452.0000000000 2016-07-01 27396.0000000000 2016-10-01 29491.0000000000 2017-01-01 27880.0000000000 2017-04-01 29335.0000000000 2017-07-01 29058.0000000000 2017-10-01 31661.0000000000 2018-01-01 30267.0000000000 2018-04-01 31851.0000000000