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Word: certified (lookup in dictionary) (lookup stats)
Dates: during 1910-1919
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Word Time Machine

Normalized population density for word "certified" throughout decades:

1870s : 0.1730
1880s : 0.2441
1890s : 0.2188
1900s : 0.0758
1910s : 0.2789
1920s : 0.7245
1930s : 1.1675
1940s : 0.7711
1950s : 0.9003
1960s : 0.8984
1970s : 0.9505
1980s : 1.0693
1990s : 1.0050
2000s : 1.4707
2010s : 0.9605