Annual Percent
1979-01-01 20.4388751175505
1980-01-01 21.2410290459219
1981-01-01 20.7481274398592
1982-01-01 19.4038233273325
1983-01-01 19.9824705172656
1984-01-01 19.9823401922432
1985-01-01 19.4675127308151
1986-01-01 20.6357504029400
1987-01-01 21.5080971542713
1988-01-01 22.0241345256629
1989-01-01 22.8732903067155
1990-01-01 24.1230411797030
1991-01-01 24.3933611164052
1992-01-01 24.2853866521862
1993-01-01 24.9576471651537
1994-01-01 26.1269890102702
1995-01-01 27.3363381650698
1996-01-01 29.3833287764150
1997-01-01 29.8101778368472
1998-01-01 30.8392598470536
1999-01-01 31.2502633848185
2000-01-01 34.2179549972608
2001-01-01 35.9976747148884
2002-01-01 37.9028159984212
2003-01-01 39.5848551764923
2004-01-01 41.1222540041045
2005-01-01 43.1107233931644
2006-01-01 45.9082954659888
2007-01-01 47.2780178760891
2008-01-01 49.0825201651472
2009-01-01 51.3535825630916
2010-01-01 52.7198943847221
2011-01-01 53.3857770177574
2012-01-01 53.9278387162180
2013-01-01 54.0139101437026
2014-01-01 54.0328264223594
2015-01-01 55.2333532073289
2016-01-01 56.7069886555592
2017-01-01 57.8563974853637