Cleveland Cavaliers win percentages 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
 2000s:     9      0      2      3      4      0     44.7     330   408
 1990s:    10      0      2      8      0      0     55.1     434   354
 1980s:    10      0      1      3      5      1     39.8     326   494
 1970s:     9      0      0      4      4      1     41.2     304   434
Totals:    38      0      5     18     13      2     45.2    1394  1690

Per decade, the number of appearances in 
each playoff round:
                                    Yrs in    Yrs in   Yrs in
                  Finals   Yrs in   Conf.     Conf.    Round    Yrs in
          Yrs.     Wins    Finals   Finals    Semis    of 16   Playoffs
 2000s:     9        0        1        1        3        3        3
 1990s:    10        0        0        1        2        7        7
 1980s:    10        0        0        0        0        3        3
 1970s:     9        0        0        1        1        2        3
Totals:    38        0        1        3        6       15       16