Record Sales Skyrocket Beginning in 1955 Record Sales Skyrocket ?Beginning in 1955 - when rock and roll records first began to appear - sales increased by about 36 percent per year, reaching $600 million in 1959. ((In the 1960s the growth was astronomical. Sales broke the $1 billion mark in 1966 ((they reached the $2 billion mark by _________). Record Sales Skyrocket Beginning in 1955 Record Sales Skyrocket ?Beginning in 1955 - when rock and roll records first began to appear - sales increased by about 36 percent per year, reaching $600 million in 1959. ((In the 1960s the growth was astronomical. Sales broke the $1 billion mark in 1966 ((they reached the $2 billion mark by _________). 1972 1980 1969 1968