Iowa - Human Development Index
| 2015 | 0.926 |
| 2014 | 0.925 |
| 2013 | 0.922 |
| 2012 | 0.922 |
| 2011 | 0.919 |
| 2010 | 0.915 |
| 2009 | 0.912 |
| 2008 | 0.912 |
| 2007 | 0.912 |
| 2006 | 0.907 |
| 2005 | 0.905 |
| 2004 | 0.902 |
| 2003 | 0.898 |
| 2002 | 0.893 |
| 2001 | 0.890 |
| 2000 | 0.889 |
| 1999 | 0.889 |
| 1998 | 0.889 |
| 1997 | 0.887 |
| 1996 | 0.886 |
| 1995 | 0.885 |
