Year	% gross
1992	101.04044342041
1993	105.885292053223
1994	105.782241821289
1995	105.246353149414
1996	105.254951477051
1997	105.482208251953
1998	100.622947692871
1999	100.779731750488
2000	99.7256317138672
2001	100.130439758301
2002	101.469337463379
2003	102.056762695312
2004	102.247451782227
2005	102.393692016602
2006	103.679229736328
2007	103.090713500977
2008	104.456169128418
2009	105.815200805664
2010	107.350486755371
2011	107.99600982666
2012	107.15177154541
2013	106.468948364258
2014	105.907691955566
2015	104.799690246582
2016	102.963111877441
2017	103.803497314453
2018	103.851669311523
2019	104.403511047363
2020	104.518516540527
2021	104.173263549805