I think you need to distinguish dream activity and dream recall. I thought that everyone dreams every night. However, many factors influence whether we recall the dreams.
Thus, I think a more productive search would be to focus on the factors that influence dream recall, and perhaps the prominence of dreams in peoples lives.
I found one older article by Cohen (1973) which summarises research on the frequency of dream recall. He states that
Frequency of dream recall is affected by physiological, methodological, and psychological factors.
Beaulieu-Prevost and Zadra (2005) writes
Schonbar (1965) suggested that people who remember many dreams are
generally interested in dreams, in trying to understand them, in
increasing their dream recall frequency, and tend to have an overall
positive attitude towards dreams.
Beaulieu-Prevost and Zadra (2005) then go on to cite numerous such studies.
Thus, the next question would be whether the factors that influence dream recall have changed over recent history. Palagini et al (2011) might provide a useful starting point as they review historical perspectives of dreaming.
- Beaulieu-Prévost, D., & Zadra, A. (2005). Dream recall frequency and attitude towards dreams: a reinterpretation of the relation. Personality and individual differences, 38(4), 919-927.
- Cohen, D. B. (1969). Frequency of dream recall estimated by three methods and related to defense preference and anxiety. Journal of Consulting and Clinical Psychology, 33(6), 661.
- Palagini, L., & Rosenlicht, N. (2011). Sleep, dreaming, and mental health: A review of historical and neurobiological perspectives. Sleep medicine reviews, 15(3), 179-186.