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

   Tax Year |      Freq.     Percent        Cum.
------------+-----------------------------------
       1996 |          1        0.01        0.01
       1997 |          1        0.01        0.02
       2000 |          1        0.01        0.03
       2003 |          2        0.02        0.05
       2004 |          2        0.02        0.07
       2006 |          1        0.01        0.08
       2007 |          3        0.03        0.11
       2008 |          2        0.02        0.13
       2009 |          4        0.04        0.17
       2010 |          6        0.06        0.23
       2011 |          5        0.05        0.28
       2012 |          9        0.09        0.37
       2013 |         31        0.31        0.68
       2014 |         18        0.18        0.86
       2015 |        146        1.46        2.32
       2016 |        344        3.44        5.76
       2017 |      4,491       44.91       50.67
       2018 |      3,188       31.88       82.55
       2019 |         14        0.14       82.69
          . |      1,731       17.31      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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