Year	% gross
1971	5.2872200012207
1972	5.66871976852417
1973	5.27304983139038
1987	5.68192005157471
2003	1.62490999698639
2005	3.1768000125885
2006	3.10829997062683
2007	3.01680994033813
2008	3.78548002243042
2009	4.08082008361816
2010	4.53999996185303
2011	4.99482011795044
2017	2.86144995689392