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Word: 4a (lookup in dictionary) (lookup stats)
Dates: during 1880-1889
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Word Time Machine

Normalized population density for word "4a" throughout decades:

1880s : 1.8253
1890s : 6.3175
1900s : 8.1026
1910s : 9.7325
1920s : 3.3946
1930s : 2.4325
1940s : 0.3656
1950s : 0.0507
1970s : 0.0515
1980s : 0.0800
1990s : 0.0227
2000s : 0.0304