Year	% gross
1970	44.5446090698242
1971	45.3136596679688
1972	46.6948318481445
1973	48.0896110534668
1974	50.3970985412598
1975	51.9712791442871
1976	53.0315093994141
1977	56.5657806396484
1978	60.3618316650391
1979	64.4441375732422
1980	67.6813812255859
1981	70.5188064575195
1982	72.4063034057617
1983	72.3658981323242
1984	71.9026184082031
1985	69.9201736450195
1986	67.8145294189453
1987	66.6899337768555
1988	64.7489395141602
1989	66.2949295043945
1990	64.9354095458984
1991	66.0488967895508
1992	66.0947494506836
1993	66.9308395385742
1994	67.1695175170898
1995	67.5002899169922
1996	65.9805603027344
1997	69.4636993408203
1998	70.507698059082
1999	71.3521575927734
2000	73.7256469726562
2001	75.9376525878906
2002	78.1145172119141
2003	81.0584716796875
2004	83.5161590576172
2005	86.3835525512695
2006	88.8081512451172
2007	90.2200393676758
2008	91.8767700195312
2009	92.686279296875
2010	92.7795104980469
2011	93.9084091186523
2012	95.2988662719727
2013	95.8079376220703
2014	95.2650604248047
2015	94.5202407836914
2016	94.2808227539062
2017	94.8867568969727
2018	95.6028900146484
2019	96.6564331054688
2020	97.5708312988281
2021	97.0043563842773
2022	97.0867004394531