Year % gross 1976 37.15625 1977 38.2919311523438 1998 52.9386787414551 2015 83.3830032348633 2016 85.7419967651367 2017 86.8830032348633 2018 88.3639984130859 2019 90.7210006713867 2020 92.6510009765625 2021 96.4199981689453 2022 97.2850036621094