Year	% gross
1973	94.9429168701172
1974	93.5605773925781
1975	101.594482421875
1976	107.155448913574
1977	106.839141845703
1978	103.889709472656
1979	103.338249206543
1980	102.896873474121
1981	103.528610229492
1982	103.361488342285
1983	104.691520690918
1984	106.955429077148
1985	111.014129638672
1986	115.638999938965
1987	117.689956665039
1988	116.999198913574
1989	114.14298248291
1990	111.695739746094
1991	109.174438476562
1992	108.173683166504
1993	107.411491394043
1994	107.36784362793
1995	108.43286895752
1996	108.569190979004
1997	109.084426879883
1998	110.064781188965
1999	111.979888916016
2000	113.75464630127
2001	115.02335357666
2002	113.755439758301
2003	112.455993652344
2004	111.130722045898
2005	109.10099029541
2006	106.999641418457
2007	107.517517089844
2008	107.80712890625
2009	107.141242980957
2010	103.614616394043
2011	102.827629089355
2012	103.256126403809
2013	103.571601867676
2014	100.832550048828
2015	100.058708190918
2016	100.456840515137
2017	100.94539642334
2018	101.111320495605
2019	101.225952148438
2020	101.318092346191
2021	101.616706848145
2022	102.22004699707