<div class="wrap">
      <select id="model" @change="changeData" class="flat-select">
        <option value="iphone5">iPhone 5</option>
        <option value="iphone6">iPhone 6</option>
        <option value="iphone7">iPhone 7</option>
      </select>
      <div id="chart-year" class="chart-box">
        <apexchart ref="chartYear" type=bar height=350 :options="chartOptionsYear" :series="seriesYear" />
      </div>
      <div id="chart-quarter" class="chart-box">
        <apexchart ref="chartQuarter" type=bar height=350 :options="chartOptionsQuarter" :series="seriesQuarter" />
      </div>
    </div>