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Words getting along nicely ....

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Word: improves (lookup in dictionary) (lookup stats)
Dates: during 175166-175166
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Word Time Machine

Normalized population density for word "improves" throughout decades:

1870s : 1.9102
1880s : 0.7148
1890s : 0.6901
1900s : 0.4184
1910s : 0.3909
1920s : 0.6347
1930s : 0.6733
1940s : 0.7137
1950s : 0.8255
1960s : 0.9173
1970s : 0.9868
1980s : 0.9347
1990s : 1.1743
2000s : 1.4725
2010s : 1.7478