Frequencies for first 10,000 rows of year variable in popcounty5yagesrh2000_2010 dataset :

       year |      Freq.     Percent        Cum.
------------+-----------------------------------
       2000 |        910        9.10        9.10
       2001 |        909        9.09       18.19
       2002 |        909        9.09       27.28
       2003 |        909        9.09       36.37
       2004 |        909        9.09       45.46
       2005 |        909        9.09       54.55
       2006 |        909        9.09       63.64
       2007 |        909        9.09       72.73
       2008 |        909        9.09       81.82
       2009 |        909        9.09       90.91
       2010 |        909        9.09      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 14 Oct 2016