Year	% gross
1971	81.2511367797852
1972	82.8075180053711
1973	83.5560989379883
1974	84.4387664794922
1975	84.3946533203125
1976	84.379150390625
1977	84.3882827758789
1978	84.9492874145508
1979	95.8087463378906
1980	100.654258728027
1981	102.392219543457
1982	103.231079101562
1983	102.865707397461
1984	101.797180175781
1985	102.155288696289
1986	102.141288757324
1987	103.249732971191
1988	103.050537109375
1989	102.419952392578
1990	102.787292480469
1991	103.489479064941
1992	103.49681854248
1993	101.995697021484
1994	99.8105773925781
1995	96.2536468505859
1996	92.0289916992188
1997	91.8687286376953
1998	92.9883575439453
1999	97.0751419067383
2000	97.5792999267578
2001	106.08837890625
2002	105.329238891602
2004	104.583541870117
2005	104.385673522949
2006	104.167770385742
2007	103.599281311035
2008	104.51220703125
2009	104.828163146973
2010	104.161827087402
2011	103.835189819336
2012	103.784408569336
2013	103.786483764648
2014	107.452003479004
2015	105.574737548828
2016	105.039352416992
2017	101.085998535156
2018	99.1729965209961
2019	99.3099975585938
2020	99.431999206543
2021	99.5199966430664
2022	101.58699798584
2023	99.6829986572266