Year	% gross
1991	99.3527603149414
1992	99.5632705688477
1993	102.936492919922
1994	102.593391418457
1995	102.467727661133
1996	102.640159606934
1997	103.132537841797
1998	104.97093963623
1999	105.53662109375
2000	105.392036437988
2001	106.650672912598
2002	104.92115020752
2003	103.66805267334
2004	103.642723083496
2005	103.440620422363
2006	104.262641906738
2007	104.793502807617
2008	105.103981018066
2009	104.816513061523
2010	104.337593078613
2011	104.415718078613
2012	104.140548706055
2013	103.638671875
2014	102.62181854248
2015	102.702461242676
2016	101.406066894531
2017	101.738708496094
2018	102.645378112793
2019	102.547470092773
2020	101.996658325195
2021	101.346549987793