| Unions | Number | Rank | Pct. of All Workers | Rank | | Members of Unions | | 2012 | 246,000 | 15 | 9.1% | 28 | | 2011 | 302,000 | 15 | 11.3% | 22 | | 2010 | 279,000 | 15 | 10.9% | 25 | | 2009 | 277,000 | 15 | 10.6% | 27 | | 2008 | 349,000 | 14 | 12.4% | 21 | | 2007 | 333,000 | 15 | 12.0% | 21 | | 2006 | 334,000 | 15 | 12.0% | 21 | | 2005 | 346,000 | 14 | 12.4% | 20 | | 2004 | 311,000 | 15 | 11.4% | 23 | | 2003 | 327,000 | 16 | 11.8% | 24 | | 2002 | 376,000 | 14 | 13.4% | 21 | | 2001 | 395,000 | 14 | 14.3% | 20 | | % Chg. 2002 to 2012 | -34.6% | 49 | | | Represented by Unions | | 2012 | 269,000 | 15 | 10.0% | 30 | | 2011 | 333,000 | 15 | 12.4% | 26 | | 2010 | 313,000 | 15 | 12.2% | 25 | | 2009 | 319,000 | 15 | 12.2% | 27 | | 2008 | 386,000 | 14 | 13.7% | 24 | | 2007 | 359,000 | 15 | 12.9% | 24 | | 2006 | 362,000 | 15 | 13.0% | 23 | | 2005 | 368,000 | 15 | 13.2% | 22 | | 2004 | 338,000 | 15 | 12.4% | 26 | | 2003 | 352,000 | 16 | 12.7% | 26 | | 2002 | 408,000 | 15 | 14.5% | 23 | | 2001 | 424,000 | 14 | 15.4% | 21 | | % Chg. 2002 to 2012 | -34.1% | 49 | | Source: U.S. Bureau of Labor Statistics |