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Word: ku (lookup in dictionary) (lookup stats)
Dates: during 1930-1939
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Word Time Machine

Normalized population density for word "ku" throughout decades:

1880s : 0.0365
1890s : 0.0654
1900s : 0.1588
1920s : 3.5037
1930s : 1.0308
1940s : 1.1232
1950s : 0.8769
1960s : 1.2993
1970s : 0.8592
1980s : 0.9980
1990s : 1.2376
2000s : 0.4123
2010s : 0.3094