raw_data = [
{
year: new Date("2016"),
first_day_attendance: 283041,
twentieth_day_attendance: null,
first_day_percentage: 0.939
},
{
year: new Date("2017"),
first_day_attendance: 276444,
twentieth_day_attendance: null,
first_day_percentage: 0.947
},
{
year: new Date("2018"),
first_day_attendance: 268406,
twentieth_day_attendance: null,
first_day_percentage: 0.945
},
{
year: new Date("2019"),
first_day_attendance: 266238,
twentieth_day_attendance: null,
first_day_percentage: 0.941
},
{
year: new Date("2020"),
first_day_attendance: 233828,
twentieth_day_attendance: null,
first_day_percentage: 0.842
},
{
year: new Date("2021"),
first_day_attendance: 242579,
twentieth_day_attendance: 260145,
first_day_percentage: 0.912
}
]