Year	% gross
1971	0.846970021724701
1972	3.3797299861908
1973	6.79746007919312
1974	12.6092901229858
1975	19.02294921875
1976	22.2648906707764
1977	25.8375396728516
1978	29.6096591949463
1979	33.1826286315918
1980	34.5962295532227
1981	37.9854583740234
1982	41.5495681762695
1983	47.7831382751465
1984	54.9361305236816
1985	62.5746307373047
1986	68.7067108154297
1987	73.1730880737305
1988	76.2199783325195
1989	78.310920715332
1990	79.6515502929688
1991	81.5087890625
1992	83.3124237060547
1993	85.2289199829102
1994	85.997200012207
1995	86.0792770385742
1996	86.3195266723633
1997	86.7578125
1998	86.784049987793
1999	87.3763275146484
2000	90.3969192504883
2001	91.6063613891602
2002	90.2422790527344
2003	95.6134796142578
2005	97.9047622680664
2006	96.999267578125
2007	95.3836822509766
2008	92.8899002075195
2009	99.4017562866211
2011	111.243949890137
2012	103.882301330566
2013	109.181716918945
2014	108.644348144531
2015	106.188453674316
2016	104.984970092773
2017	105.265296936035
2018	103.396873474121
2019	101.608306884766
2020	93.9161987304688
2021	89.5740280151367
2022	90.9984893798828