Year	% gross
1971	86.1072235107422
1972	77.6640930175781
1973	86.6291275024414
1974	82.6383819580078
1975	83.4383773803711
1976	76.3788681030273
1977	76.8125076293945
1978	77.7573471069336
1979	81.425537109375
1980	80.066291809082
1981	80.1336975097656
1982	78.4660110473633
1983	79.3039703369141
1984	80.1490173339844
1985	80.3730926513672
1987	89.3550415039062
1988	90.6802825927734
1989	89.0078964233398
1990	88.4303283691406
1991	89.226806640625
1992	91.3705520629883
1993	115.084106445312
1994	121.303123474121
1995	123.860328674316
1996	125.965972900391
1997	127.759666442871
1998	138.348907470703
1999	138.468017578125
2000	134.033386230469
2001	131.138885498047
2002	130.4638671875
2003	125.122253417969
2004	99.7659301757812
2005	101.614799499512
2006	101.38941192627
2007	101.199043273926
2008	101.736717224121
2009	101.700469970703
2010	102.754257202148
2011	102.719848632812
2012	103.698631286621
2013	124.478897094727
2014	125.306221008301
2015	128.651458740234
2016	130.059234619141
2017	137.192947387695
2018	134.593017578125
2019	130.757369995117
2020	129.924987792969
2021	131.023376464844
2022	130.388244628906