Other rollers 1999 United States, Sparrow Bush, New York
Single drum rollers 1990 United States, Wylie, Texas
Other rollers 2004 5,432 h United States, Miami, Florida
Twin drum rollers 2004 5,331 h Canada, Boisbriand, Quebec
Twin drum rollers 2004 5,238 h Canada, Boisbriand, Quebec