Line graph with 3 lines and 22 points per line.

Top 4, 8, and 20 firms' share of U.S. grocery store sales, 1992-2013
In 2013, the share of sales in the top 20 U.S. grocery retailers rose for the first time since the 2007-09 recession

Percent of sales
Line 1, Top 4.
Point 1, 1992 is 16.8.
Point 2, 1993 is 16.8.
Point 3, 1994 is 16.7.
Point 4, 1995 is 17.1.
Point 5, 1996 is 17.5.
Point 6, 1997 is 19.0.
Point 7, 1998 is 28.0.
Point 8, 1999 is 27.6.
Point 9, 2000 is 28.8.
Point 10, 2001 is 31.9.
Point 11, 2002 is 29.8.
Point 12, 2003 is 32.9.
Point 13, 2004 is 33.8.
Point 14, 2005 is 35.5.
Point 15, 2006 is 34.7.
Point 16, 2007 is 37.5.
Point 17, 2008 is 38.1.
Point 18, 2009 is 37.9.
Point 19, 2010 is 36.7.
Point 20, 2011 is 36.2.
Point 21, 2012 is 36.1.
Point 22, 2013 is 36.4.
Line 2, Top 8.
Point 1, 1992 is 26.4.
Point 2, 1993 is 26.5.
Point 3, 1994 is 26.1.
Point 4, 1995 is 27.3.
Point 5, 1996 is 28.7.
Point 6, 1997 is 31.3.
Point 7, 1998 is 39.0.
Point 8, 1999 is 39.9.
Point 9, 2000 is 42.6.
Point 10, 2001 is 46.8.
Point 11, 2002 is 44.4.
Point 12, 2003 is 47.4.
Point 13, 2004 is 46.7.
Point 14, 2005 is 49.0.
Point 15, 2006 is 47.8.
Point 16, 2007 is 50.4.
Point 17, 2008 is 50.8.
Point 18, 2009 is 50.9.
Point 19, 2010 is 49.5.
Point 20, 2011 is 49.2.
Point 21, 2012 is 48.1.
Point 22, 2013 is 48.1.
Line 3, Top 20.
Point 1, 1992 is 39.2.
Point 2, 1993 is 39.9.
Point 3, 1994 is 41.1.
Point 4, 1995 is 40.6.
Point 5, 1996 is 42.2.
Point 6, 1997 is 45.9.
Point 7, 1998 is 50.3.
Point 8, 1999 is 54.0.
Point 9, 2000 is 54.7.
Point 10, 2001 is 58.7.
Point 11, 2002 is 56.2.
Point 12, 2003 is 58.8.
Point 13, 2004 is 58.8.
Point 14, 2005 is 61.6.
Point 15, 2006 is 59.6.
Point 16, 2007 is 63.7.
Point 17, 2008 is 65.1.
Point 18, 2009 is 64.3.
Point 19, 2010 is 62.9.
Point 20, 2011 is 62.2.
Point 21, 2012 is 61.8.
Point 22, 2013 is 63.8.

Source: USDA, ERS calculations using data from U.S. Census Bureau, Monthly Retail Trade Survey, company annual reports, and industry sources. Sales based on North American Industry Classification System (NAICS).