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Word: perplexity (lookup in dictionary) (lookup stats)
Dates: during 174867-174867
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Word Time Machine

Normalized population density for word "perplexity" throughout decades:

1870s : 3.5635
1880s : 1.9148
1890s : 2.3601
1900s : 0.2602
1920s : 2.1314
1930s : 2.0335
1940s : 1.0356
1950s : 0.8145
1960s : 1.1979
1970s : 1.2158
1980s : 0.6711
1990s : 0.5362
2000s : 0.4710
2010s : 0.5072