Philadelphia 76ers 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      1      8      0      0     52.2     385   353
 1990s:    10      0      1      3      6      0     38.8     306   482
 1980s:    10      0      7      3      0      0     65.2     535   285
 1970s:    10      0      2      5      2      1     47.0     385   435
 1960s:    10      1      5      4      0      0     60.8     486   313
 1950s:    10      0      3      7      0      0     57.8     404   295
Totals:    59      1     19     30      8      1     53.6    2501  2163

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        6        6
 1990s:    10        0        0        0        3        3        3
 1980s:    10        1        3        5        6        8        9
 1970s:    10        0        1        2        5        2        6
 1960s:    10        1        1        5        9        0       10
 1950s:    10        1        3        8        8        0       10
Totals:    59        3        9       21       34       19       44