Golden State Warriors 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      0      6      3      0     39.3     290   448
 1990s:    10      0      2      5      3      0     44.7     352   436
 1980s:    10      0      0      5      5      0     40.5     332   488
 1970s:    10      0      2      7      1      0     54.5     447   373
 1960s:    10      0      3      5      2      0     50.4     403   396
 1950s:    10      0      2      6      1      1     46.2     324   377
 1940s:     3      0      0      3      0      0     53.6      90    78
Totals:    62      0      9     37     15      1     46.3    2238  2596

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        0        0        1        1        1
 1990s:    10        0        0        0        1        3        3
 1980s:    10        0        0        0        2        2        2
 1970s:    10        1        1        3        6        1        6
 1960s:    10        0        2        5        6        0        7
 1950s:    10        1        1        2        5        0        6
 1940s:     3        1        2        2        2        0        3
Totals:    62        3        6       12       23        7       28