Year % gross 1971 1.49278998374939 1972 2.06990003585815 1973 2.39248991012573 1974 2.41484999656677 1975 2.49037003517151 1976 2.65989995002747 1977 2.76651000976562 1978 2.94086003303528 1996 14.2735795974731 1999 17.0452308654785 2000 17.8140697479248 2001 19.3768100738525 2002 18.8082695007324 2003 20.6804294586182 2004 22.9865703582764 2005 24.1381092071533 2006 27.2965106964111 2007 32.7882499694824 2008 40.2417106628418 2009 39.0286712646484 2010 43.7015800476074 2011 48.7871284484863 2012 54.6285400390625 2013 55.4579200744629 2014 62.3681488037109 2015 67.1035308837891 2016 64.5967636108398 2017 63.4283409118652 2018 59.2606010437012 2019 57.8826599121094 2020 56.5558586120605 2021 56.0174293518066 2022 60.7095985412598