Year	% gross
1970	1.79698002338409
1971	1.81176996231079
1972	1.84494996070862
1973	1.86958003044128
1974	1.92408001422882
1975	1.98433995246887
1976	2.03852009773254
1977	2.10564994812012
1978	2.16361999511719
1979	2.2746000289917
1980	2.27288007736206
1981	2.44847011566162
1982	2.52391004562378
1983	2.81164002418518
1984	2.97177004814148
1985	3.11186003684998
1986	3.25583004951477
1987	3.3609299659729
1988	3.12001991271973
1989	3.24354004859924
1990	3.41387009620667
1991	3.49214005470276
1992	3.43368005752563
1993	3.42627000808716
1994	3.4132399559021
1995	3.41244006156921
1996	4.00874996185303
1997	4.23632001876831
1998	4.90190982818604
1999	5.57984018325806
2000	6.23901987075806
2001	6.58933019638062
2002	6.92495012283325
2003	7.11522006988525
2004	7.30102014541626
2005	7.61604022979736
2006	8.27517986297607
2007	9.2429895401001
2008	10.4872102737427
2009	11.3855400085449
2010	12.9294099807739
2011	16.6918792724609
2012	18.5811805725098
2013	19.1141796112061
2014	20.6841907501221
2015	21.6604099273682
2016	21.8526592254639
2017	22.5880298614502
2018	23.4452590942383
2019	24.9511394500732
2020	25.6493606567383
2021	26.8255100250244
2022	27.4108104705811