St. Louis Cardinals 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      2      6      0      0     56.0     736   579
 1990s:    10      0      0     10      0      0     48.8     758   794
 1980s:    10      0      1      9      0      0     52.9     825   734
 1970s:    10      0      0     10      0      0     49.6     800   813
 1960s:    10      0      1      9      0      0     55.2     884   718
 1950s:    10      0      0     10      0      0     50.4     776   763
 1940s:    10      0      7      3      0      0     62.3     960   580
 1930s:    10      0      4      6      0      0     56.6     869   665
 1920s:    10      0      2      8      0      0     53.6     822   712
 1910s:    10      0      0      6      4      0     44.0     652   830
 1900s:     7      0      0      1      6      0     36.3     383   671
Totals:   105      0     17     78     10      0     51.9    8465  7859


Playoff appearances per decade:

                   World   Yrs in   League    Div.
                  Series    World   Champ.   Champ.     In
          Yrs.     Wins    Series   Series   Series  Playoffs
 2000s:     8        1        2        5        6        6
 1990s:    10        0        0        1        1        1
 1980s:    10        1        3        3        0        3
 1970s:    10        0        0        0        0        0
 1960s:    10        2        3        0        0        3
 1950s:    10        0        0        0        0        0
 1940s:    10        3        4        0        0        4
 1930s:    10        2        3        0        0        3
 1920s:    10        1        2        0        0        2
 1910s:    10        0        0        0        0        0
 1900s:     7        0        0        0        0        0
Totals:   105       10       17        9        7       22