| Number of part time employees in the United States (in millions) | |
|---|---|
| 1990 | 20.13 |
| 1991 | 20.53 |
| 1992 | 20.83 |
| 1993 | 21.15 |
| 1994 | 23.29 |
| 1995 | 23.22 |
| 1996 | 23.17 |
| 1997 | 23.22 |
| 1998 | 23.26 |
| 1999 | 23.19 |
| 2000 | 23.04 |
| 2001 | 23.36 |
| 2002 | 23.79 |
| 2003 | 24.41 |
| 2004 | 24.73 |
| 2005 | 24.71 |
| 2006 | 24.74 |
| 2007 | 24.96 |
| 2008 | 25.33 |
| 2009 | 27.24 |
| 2010 | 27.35 |
| 2011 | 27.31 |
| 2012 | 27.66 |
| 2013 | 27.62 |
Sources:
statista.com

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Over the last two decades, part time employment has become progressively more popular, increasing by nearly eight million workers.