Based on information provided by The Recording Industry Association of America (RIAA), there were just over 920,000 45 rpm records sold between 1950 and 1989, the years generally accepted as the era of the 45 rpm vinyl record.

Annual 45 rpm SALES 1950 thru 1989 (total of 920,927 records)
35,000
30,000
25,000
20,000
15,000
10,000
5,000
1949195019511952195319541955 1956195719581959196019611962 1963196419651966196719681969 1970197119721973197419751976 1977197819791980198119821983 198419851986198719881989