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Word: switchboard (lookup in dictionary) (lookup stats)
Dates: during 1970-1979
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Word Time Machine

Normalized population density for word "switchboard" throughout decades:

1890s : 0.0804
1900s : 0.2927
1910s : 0.0798
1920s : 0.8287
1930s : 1.2558
1940s : 1.7473
1950s : 1.9221
1960s : 1.4306
1970s : 2.0512
1980s : 0.7863
1990s : 0.3753
2000s : 0.2611