Frequencies for first 10,000 rows of tax_year variable in eobmfks dataset :

   Tax Year |      Freq.     Percent        Cum.
------------+-----------------------------------
       1997 |          4        0.04        0.04
       1998 |          6        0.06        0.10
       1999 |          1        0.01        0.11
       2000 |          1        0.01        0.12
       2001 |          1        0.01        0.13
       2002 |          2        0.02        0.15
       2004 |          1        0.01        0.16
       2006 |          6        0.06        0.22
       2007 |          4        0.04        0.26
       2009 |          7        0.07        0.33
       2010 |          7        0.07        0.40
       2011 |         12        0.12        0.52
       2012 |         15        0.15        0.67
       2013 |         52        0.52        1.19
       2014 |         43        0.43        1.62
       2015 |        126        1.26        2.88
       2016 |        301        3.01        5.89
       2017 |      4,357       43.57       49.46
       2018 |      3,036       30.36       79.82
       2019 |         16        0.16       79.98
          . |      2,002       20.02      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 15 Apr 2019