Under construction: Consider factors such as hours of work and leisure time and/or limited disposable income.
The decade was interrupted in 1916, when America declared war against Germany -- World War I -- a two-year interval. Immigration was another issue.
Hours of work still hovered in the 60-hours per week range, so "leisure time" during that era had a limited meaning, but was defined much differently, say, a decade later, when in 1930, "leisure time" becomes a national issue.
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