Year % gross 1992 23.0339698791504 1993 22.7412490844727 1994 23.154109954834 1995 24.1044692993164 1996 37.6386184692383 1997 40.8350715637207 1998 39.7308197021484 1999 41.3058815002441 2000 43.9538116455078 2001 45.4543685913086 2002 46.295051574707 2003 48.0313987731934 2004 49.0062484741211 2005 51.0130996704102 2006 51.5383110046387 2007 52.1417388916016 2008 50.5656700134277 2009 50.1385917663574 2010 51.9687614440918 2011 55.4121894836426 2012 57.7264785766602 2013 60.6319999694824 2014 61.0349884033203 2015 61.1786499023438 2016 58.9590187072754 2017 58.0796585083008 2018 58.2775802612305 2019 58.7618103027344 2020 57.7667083740234 2021 58.3783416748047 2022 56.8423614501953