Oakland Raiders : win % / playoff appearances per decade

The number of seasons with win % in the following ranges:
                                                    Decade
          Yrs.    80%+ 60-79% 40-59% 20-39% 0-19%    Ave.    Wins Losses
 2010s:    10      0      1      4      4      1     39.4      63    97     0
 2000s:    10      0      3      0      6      1     38.8      62    98     0
 1990s:    10      0      2      7      1      0     51.3      82    78     0
 1980s:    10      1      4      4      1      0     58.6      89    63     0
 1970s:    10      2      6      2      0      0     71.5     100    38     6
 1960s:     4      3      1      0      0      0     82.1      45     9     2
Totals:    54      6     17     17     12      2     53.5     441   383     8


Playoff appearances per decade

                Super  Yrs in
                 Bowl   Super Conf.  Conf.  In
          Yrs.   Wins   Bowl  Finals Semis  Playoffs
 2010s:    10      0      0      0      0      1
 2000s:    10      0      1      2      3      3
 1990s:    10      0      0      1      2      3
 1980s:    10      2      2      2      4      5
 1970s:    10      1      1      6      7      7
 1960s:     4      0      1      3      3      3
Totals:    54      3      5     14     19     22