Google Books Ngram Viewer

Graph these comma-separated phrases:
case-insensitive
between and from the corpus with smoothing of .  
Search in Google Books:

1700 - 1853 1854 - 1933 1934 - 1944 1945 - 1996 1997 - 2008 depression English
1700 - 1806 1807 - 1817 1818 - 1827 1828 - 1956 1957 - 2008 happiness English
1700 - 1831 1832 - 1884 1885 - 1900 1901 - 1992 1993 - 2008 sadness English

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