Year % gross 1980 1.06958997249603 1981 1.42041003704071 1982 1.37123000621796 1983 1.45776998996735 1986 1.91648995876312 1987 1.94743001461029 1988 2.03853988647461 1989 2.10373997688293 1990 2.1165599822998 1991 2.22045993804932 1992 2.26387000083923 1993 2.23536992073059 1994 2.17617988586426 1996 2.33388996124268 1997 2.15401005744934 1998 2.25808000564575 1999 2.76547002792358 2000 2.76023006439209 2001 3.29233002662659 2002 2.90290999412537 2003 2.99128007888794 2004 5.22468996047974 2005 7.36486005783081 2006 8.68148994445801 2007 8.7757396697998 2008 9.84630012512207 2009 10.5355701446533 2010 12.0143604278564 2011 12.6218299865723 2012 13.4041299819946 2013 14.1612901687622 2014 14.1668701171875 2015 14.497389793396 2016 15.1908702850342 2017 15.5569496154785 2018 15.9024801254272 2019 15.9510698318481 2020 15.9251298904419 2021 16.3514709472656