Year	% gross
1971	101.15535736084
1972	111.644577026367
1973	131.796173095703
1974	104.374809265137
1975	105.839126586914
1976	134.266647338867
1977	114.091361999512
1978	128.581802368164
1980	153.829666137695
1981	156.513427734375
1982	153.778274536133
1983	146.835662841797
1984	139.588455200195
1985	134.812255859375
1987	130.125457763672
1988	133.208190917969
1990	140.233459472656
1991	143.495315551758
1992	148.288238525391
1996	135.316467285156
1998	126.469291687012
1999	100.426742553711
2002	120.187088012695
2003	122.325042724609
2004	123.554298400879
2005	125.449829101562
2007	122.219627380371
2008	121.882247924805
2009	121.78849029541
2010	118.775886535645
2011	118.858947753906
2012	110.949981689453
2013	110.179550170898
2014	106.443450927734
2015	107.263946533203
2016	108.051780700684
2017	109.629280090332