Kansas City Chiefs : 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
 2020s:     6      3      2      0      1      0     71.3      72    29     0
 2010s:    10      0      7      2      0      1     60.0      96    64     0
 2000s:    10      1      1      4      3      1     43.8      70    90     0
 1990s:    10      2      4      4      0      0     63.8     102    58     0
 1980s:    10      0      1      4      5      0     44.1      66    84     2
 1970s:    10      0      1      4      4      1     43.4      60    79     5
 1960s:     4      2      2      0      0      0     77.7      43    12     1
Totals:    60      8     18     18     13      3     55.0     509   416     8


Playoff appearances per decade

                Super  Yrs in
                 Bowl   Super Conf.  Conf.  In
          Yrs.   Wins   Bowl  Finals Semis  Playoffs
 2020s:     6      2      4      5      5      5
 2010s:    10      1      1      2      4      7
 2000s:    10      0      0      0      1      2
 1990s:    10      0      0      1      4      7
 1980s:    10      0      0      0      0      1
 1970s:    10      0      0      0      1      1
 1960s:     4      1      2      2      3      3
Totals:    60      4      7     10     18     26