Google Books Ngram Viewer

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

1860 - 1941 1942 - 1976 1977 - 1979 1980 - 1989 1990 - 2000 monopoly capitalism English
1860 - 1933 1934 - 1975 1976 - 1979 1980 - 1990 1991 - 2000 rate of surplus value English
1860 - 1941 1942 - 1977 1978 - 1980 1981 - 1988 1989 - 2000 organic composition of capital English

Run your own experiment! Raw data is available for download here.
© 2013 Google - Privacy & Terms - About Google - About Google Books - About Ngram Viewer