Year % gross 1970 11.0921096801758 1971 12.2540502548218 1972 13.2626800537109 1973 14.5819597244263 1974 17.2370891571045 1975 19.2780208587646 1976 21.0462398529053 1977 21.6553497314453 1978 22.3581199645996 1979 22.7976493835449 1980 23.0048599243164 1981 23.2131996154785 1982 23.4281692504883 1983 24.5013008117676 1984 25.5787506103516 1985 27.3741302490234 1986 29.8242092132568 1987 30.8288593292236 1988 33.1073112487793 1989 34.4425392150879 1990 37.1269912719727 1991 40.5413818359375 1992 42.3450393676758 1993 64.4323120117188 1994 67.3573989868164 1995 72.8387298583984 1996 77.9591903686523 1997 82.7033004760742 2015 141.459671020508 2016 141.215682983398 2017 129.974945068359 2018 119.994178771973 2019 128.240249633789 2020 130.225402832031 2021 135.733032226562 2022 128.283416748047