Year % gross 1981 42.4482002258301 1982 36.404899597168 1983 30.4644298553467 1984 25.6052093505859 1985 20.2190093994141 1986 21.3533401489258 1987 19.716609954834 1988 18.10671043396 1989 17.2454795837402 1990 15.3205099105835 1991 12.6103897094727 1992 15.9241304397583 1998 19.4546298980713 1999 23.6581401824951 2007 135.918228149414 2008 99.4197769165039 2009 92.7341766357422 2010 85.8374710083008 2011 73.3289794921875 2016 39.6110191345215