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

   Tax Year |      Freq.     Percent        Cum.
------------+-----------------------------------
       1997 |          2        0.02        0.02
       2000 |          1        0.01        0.03
       2001 |          1        0.01        0.04
       2004 |          1        0.01        0.05
       2005 |          1        0.01        0.06
       2007 |          2        0.02        0.08
       2009 |          2        0.02        0.10
       2010 |          3        0.03        0.13
       2011 |          3        0.03        0.16
       2012 |          4        0.04        0.20
       2013 |         16        0.16        0.36
       2014 |         37        0.37        0.73
       2015 |        172        1.72        2.45
       2016 |        382        3.82        6.27
       2017 |      4,733       47.33       53.60
       2018 |      2,849       28.49       82.09
       2019 |         26        0.26       82.35
          . |      1,765       17.65      100.00
------------+-----------------------------------
      Total |     10,000      100.00

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