Year	% gross
1972	103.433898925781
1973	103.51643371582
1974	102.76944732666
1989	98.9582824707031
1990	98.3924713134766
1991	97.9115295410156
1992	97.4866714477539
1993	99.0542831420898
1994	98.9604187011719
1995	97.7052230834961
1996	98.3137435913086
1997	99.7721862792969
1998	100.631172180176
1999	100.088020324707
2000	99.557258605957
2001	99.8563690185547
2002	99.6730422973633
2003	99.6127395629883
2004	99.5098724365234
2005	99.3531875610352
2006	99.1299667358398
2007	98.5906524658203
2008	97.7065582275391
2009	97.5256881713867
2010	98.2113800048828
2011	99.0408630371094
2012	100.798446655273
2013	100.186210632324
2014	99.6611862182617
2017	97.6287994384766
2018	93.9060897827148
2019	94.3685913085938
2020	80.8155670166016
2021	95.0385894775391
2022	99.8606185913086