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Word: nan (lookup in dictionary) (lookup stats)
Dates: during 1960-1969
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Word Time Machine

Normalized population density for word "nan" throughout decades:

1880s : 0.1981
1910s : 0.2641
1920s : 0.5553
1930s : 1.0890
1940s : 0.7857
1950s : 0.9516
1960s : 0.5875
1970s : 0.7043
1980s : 0.9199
1990s : 1.5384
2000s : 1.3982
2010s : 0.8395