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Word: hydrogen (lookup in dictionary) (lookup stats)
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Word Time Machine

Normalized population density for word "hydrogen" throughout decades:

1870s : 0.2080
1880s : 0.1048
1890s : 0.1315
1900s : 0.1367
1910s : 0.1117
1920s : 0.8847
1930s : 1.5710
1940s : 0.5541
1950s : 3.1629
1960s : 1.5500
1970s : 0.7416
1980s : 0.7528
1990s : 0.4350
2000s : 0.7405
2010s : 0.3997