Year	% gross
1970	0.0171099994331598
1971	0.09791000187397
1975	0.183430001139641
1977	0.981060028076172
1981	0.523739993572235
1983	2.97062993049622
1998	7.90533018112183
1999	10.693639755249
2000	6.43417978286743
2017	16.7719993591309
2018	18.1089992523193
2019	16.7269992828369
2020	18.6760005950928
2021	23.5690002441406
2022	23.0562400817871