Javascript amcharts-将dateAxis.baseInterval从一个月更改为一年没有摘要？

当我将baseInterval从月份切换到年份时，我会看到tooltipText值从9月份开始？如何将所有月份值汇总到年度。 我做错了什么

Chart-Images:
https://i.ibb.co/GnMF3p2/Picture1.jpg (month),
https://i.ibb.co/kBJzknb/Picture2.jpg (month),
https://i.ibb.co/M8R7HGs/Picture3.jpg (year)

var dateAxis = chart.xAxes.push(new am4charts.DateAxis());
dateAxis.renderer.minGridDistance = 50;
dateAxis.renderer.grid.template.location = 0.5;
dateAxis.baseInterval = {
count: 1,
timeUnit: "year"
}
        
var series = chart.series.push(new am4charts.LineSeries());
series.name = "Installation";
series.dataFields.dateX = "day";
series.dataFields.valueY = "turnover_installation";
series.tooltipText = "Installation: {valueY.value}";
series.sequencedInterpolation = true;
series.fillOpacity = 0.6;
series.defaultState.transitionDuration = 1000;
series.stacked = true;
series.strokeWidth = 2;

非常感谢