San Francisco Giants 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:     8      0      1      7      0      0     53.8     695   598
 1990s:    10      0      1      9      0      0     50.8     790   766
 1980s:    10      0      0      9      1      0     49.3     773   795
 1970s:    10      0      0     10      0      0     49.3     794   818
 1960s:    10      0      1      9      0      0     56.2     902   704
 1950s:    10      0      2      8      0      0     53.3     822   721
 1940s:    10      0      0      8      2      0     47.3     724   808
 1930s:    10      0      2      8      0      0     56.9     868   657
 1920s:    10      0      5      5      0      0     58.2     890   639
 1910s:    10      0      5      5      0      0     59.8     889   597
 1900s:     7      0      6      1      0      0     62.7     663   394
Totals:   105      0     23     79      3      0     54.0    8810  7497


Playoff appearances per decade:

                   World   Yrs in   League    Div.
                  Series    World   Champ.   Champ.     In
          Yrs.     Wins    Series   Series   Series  Playoffs
 2000s:     8        0        1        1        3        3
 1990s:    10        0        0        0        1        1
 1980s:    10        0        1        2        0        2
 1970s:    10        0        0        1        0        1
 1960s:    10        0        1        0        0        1
 1950s:    10        1        2        0        0        2
 1940s:    10        0        0        0        0        0
 1930s:    10        1        3        0        0        3
 1920s:    10        2        4        0        0        4
 1910s:    10        0        5        0        0        5
 1900s:     7        1        1        0        0        1
Totals:   105        5       18        4        4       23