Year	% gross
1991	98.6823577880859
1992	99.6969223022461
1993	103.932159423828
1994	104.156883239746
1995	103.692176818848
1996	103.8291015625
1997	104.170478820801
1998	99.2678070068359
1999	99.5309066772461
2000	99.1294326782227
2001	99.554801940918
2002	100.853607177734
2003	101.226783752441
2004	101.377777099609
2005	101.436492919922
2006	102.486396789551
2007	102.009773254395
2008	103.240730285645
2009	103.314292907715
2010	104.891357421875
2011	105.34651184082
2012	104.442237854004
2013	103.935333251953
2014	103.303871154785
2015	102.192413330078
2016	100.852310180664
2017	101.095642089844
2018	100.837303161621
2019	101.152557373047
2020	101.307800292969
2021	101.203536987305