Year	% gross
1970	3.89762997627258
1971	4.7298002243042
1972	4.93503999710083
1973	5.24902009963989
1974	5.8610200881958
1975	7.4173698425293
1980	9.38206958770752
1981	9.70699024200439
1982	9.41681957244873
1983	10.7032804489136
1984	10.0018997192383
1985	9.33329010009766
1986	8.98023986816406
1987	8.4796895980835
1988	8.38113021850586
1989	8.24919033050537
1990	8.59850025177002
1993	10.7760601043701
1995	9.79769039154053
1996	9.90301036834717
1999	14.1942796707153
2000	17.2084293365479
2001	19.3145008087158
2002	28.3510494232178
2003	26.9992599487305
2004	27.2375907897949
2005	27.9218807220459
2007	31.2753391265869
2008	37.1245803833008
2009	40.0043411254883
2010	37.7850494384766