Year	% gross
1971	6.96206998825073
1972	7.28766012191772
1973	7.41418981552124
1974	8.47249031066895
1975	8.36058044433594
1976	8.62594985961914
1977	9.67934989929199
1978	9.79413032531738
1979	10.0309600830078
1980	10.6300802230835
1981	11.0421199798584
1982	11.6376895904541
1983	13.168270111084
1984	14.6939001083374
1985	15.5158004760742
1986	14.8570604324341
1987	14.2636499404907
1988	13.7742595672607
1989	14.130729675293
1990	14.4635400772095
1991	14.8716201782227
1992	15.2520303726196
1993	17.5137996673584
1994	17.8118705749512
1995	20.1253395080566
1996	19.7751197814941
2008	48.2704200744629
2009	49.3689498901367
2010	48.533618927002
2021	101.391250610352