Michigan Codebooks

Michigan 2010 Codebook. UMTRI Transportation Data Center. January 2012.  
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Michigan 2009 Codebook. UMTRI Transportation Data Center. April 2010.  
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Michigan 2008 Codebook. UMTRI Transportation Data Center. May 2009.  
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Michigan 2007 Codebook. UMTRI Transportation Data Center. June 2008.  
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Michigan 2006 Codebook. UMTRI Transportation Data Center. June 2007.  
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Michigan 2005 Codebook. UMTRI Transportation Data Center. June 2006.  
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Michigan 2004 Codebook. UMTRI Transportation Data Center. June 2005.  
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Michigan 2003 Codebook. UMTRI Transportation Data Center. July 2004.  
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Michigan 2002 Codebook. UMTRI Transportation Data Center. August 2003.  
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Michigan 2001 Codebook. UMTRI Transportation Data Center. July 2002.  
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Michigan 2000 Codebook. UMTRI Transportation Data Center. October 2001.  
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Michigan 1999 Codebook. UMTRI Transportation Data Center. June 2000.  
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Michigan 1998 Codebook. UMTRI Transportation Data Center. June 1999.  
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Michigan 1997 Codebook. UMTRI Transportation Data Center. September 1998.  
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Michigan 1996 Codebook. UMTRI Transportation Data Center. August 1997.  
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Michigan 1995 Codebook. UMTRI Transportation Data Center. July 1996.  
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Michigan 1994 Codebook. UMTRI Transportation Data Center. June 1995.  
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Michigan 1993 Codebook. UMTRI Transportation Data Center. February 1995.  
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Michigan 1992 Codebook. UMTRI Transportation Data Center. February 1995.  
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Michigan 1991 Codebook. UMTRI Transportation Data Center. November 1992.  
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