.

December 1996December 1997December 1998December 1999December 2000December 2001December 2002December 2003December 2004December 2005June 2006December 2007October 2009July 2011August 2011September 2011October 2011November 2011January 2012AVERAGE

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Male Byline - Hardcover86.4%88.2%90.9%80%96%95.5%85.7%94.4%78.9%88.9%83.33%91.30%94.44%83.33%84.21%81.82%82.61%90.00%100.00%

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Female Byline - Hardcover13.6%11.8%9.1%20%4%4.5%14.3%5.6%21.1%11.1%16.67%8.70%5.56%16.67%15.79%18.18%17.39%10.00%0.00%11.79%

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Male Byline - Paperback81.8%85.7%96%91.7%84.6%79.2%75%82.4%87.5%90.9%88.24%94.12%89.47%92.86%100.00%100.00%92.31%100.00%100.00%

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Female Byline - Paperback18.2%14.3%4%8.3%15.4%20.8%25%17.6%12.5%9.1%11.76%5.88%10.53%7.14%0.00%0.00%7.69%0.00%0.00%9.91%

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Source:http://www.businessweek.com/1997/04/b351133.htmhttp://www.businessweek.com/1998/05/b3563052.htmhttp://www.businessweek.com/1999/99_06/b3615029.htmhttp://www.businessweek.com/2000/00_06/b3667089.htmhttp://www.businessweek.com/2001/01_08/b3720069.htmhttp://www.businessweek.com/magazine/content/02_06/b3769030.htmhttp://www.businessweek.com/magazine/content/03_06/b3819036.htmhttp://www.businessweek.com/pdfs/2004/0406_2003bestsellers.pdfhttp://www.businessweek.com/magazine/content/05_07/b3920031_mz005.htmhttp://www.businessweek.com/pdfs/2006/bestsellersof2005.pdfhttp://www.businessweek.com/pdfs/2006/0623_bestsell.pdfhttp://www.businessweek.com/pdfs/2007/0749_bestsellers.pdfhttp://www.lakeforestmba.edu/upload/alumni_documents/businessweek_best_sellers_october_2009.pdfhttp://www.nytimes.com/best-sellers-books/2011-07-03/hardcover-business-books/list.html#http://www.nytimes.com/best-sellers-books/2011-08-07/hardcover-business-books/list.htmlhttp://www.nytimes.com/best-sellers-books/2011-09-04/hardcover-business-books/list.htmlhttp://www.nytimes.com/best-sellers-books/2011-10-02/hardcover-business-books/list.htmlhttp://www.nytimes.com/best-sellers-books/2011-11-06/hardcover-business-books/list.htmlhttp://www.nytimes.com/best-sellers-books/2012-01-01/hardcover-business-books/list.html

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http://www.nytimes.com/best-sellers-books/2011-07-03/paperback-business-books/list.htmlhttp://www.nytimes.com/best-sellers-books/2011-08-07/paperback-business-books/list.htmlhttp://www.nytimes.com/best-sellers-books/2011-09-04/paperback-business-books/list.htmlhttp://www.nytimes.com/best-sellers-books/2011-10-02/paperback-business-books/list.htmlhttp://www.nytimes.com/best-sellers-books/2011-11-06/paperback-business-books/list.htmlhttp://www.nytimes.com/best-sellers-books/2012-01-01/paperback-business-books/list.html