如何在ng2-datepicker中设置仅选择年份选项？

<ng2-datepicker [datepickerOptions]="options"></ng2-datepicker>

import { Component } from '@angular/core';

@Component({
  selector: 'app-datepicker',
  templateUrl: './datepicker.component.html',
  styleUrls: ['./datepicker.component.css']
})
export class DatepickerComponent {
  options: any;

  constructor() {
    this.options = {
      format: 'yyyy',
      selectOnlyYear: true
    };
  }
}

this.options = {
  format: 'yyyy',
  selectOnlyYear: true,
  language: 'zh-CN',
  minDate: '2000-01-01',
  maxDate: '2022-12-31'
};