Year % gross 1973 0.274839997291565 1988 85.1193389892578 1998 21.0771102905273 1999 18.7490005493164 2000 17.4767398834229 2001 17.3305206298828 2002 14.6385498046875 2003 11.9068298339844 2004 11.3545999526978 2005 11.2669897079468 2009 11.1716899871826 2010 13.1994256973267 2011 25.9335536956787 2013 32.827018737793 2015 32.0924491882324 2016 34.891040802002 2017 41.028678894043 2018 40.0368843078613 2020 44.4183197021484 2021 35.4140090942383