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| Company | Unit | 1989 | 1990 | 1991 | 1992 | 1993 | 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 |
| Ford Motor Company | -4.99 | -7.03 | -4.48 | -7.36 | -34.4 | |||||||||||||||||||||||||||
| General Motors | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | ... | -30.6 | -8.90 | -2.92 | -2.51 | -5.44 | ||||||
| Navistar International | ... | -7.13 | -15.5 | -22.3 | 10.4 | -12.8 | ||||||||||||||||||||||||||
| Paccar | ... | 83.9 | 37.2 | 26.8 | 28.7 | 31.8 |
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