dropdown charts

HTML

<select class="dropdown" id="dd">
      <option value="" selected="selected">Select: Sanitary area by</option>
      <option value="Centres">Total number of centres</option>
      <option value="By health centres">Health centres only</option>
      <option value="By doctor's office">Doctor's offices only</option>
      <option value="Ratio: population/centre">Ratio: population/centre</option>
  </select>
  <div id="chartContainer1" style="height: 360px; width: 100%;"></div>

  
  <select class="dropdown" id="second">
            <option value="" selected="selected">Select: Sanitary area by</option>
            <option value="PeopleGP16">Ratio: population/GP</option>
            <option value="PeopleNurse16">Ratio: population/Nurse</option>
        </select>
        <div id="chartContainer2" style="height: 360px; width: 100%;"></div>
  
  
  
   <script src="https://canvasjs.com/assets/script/canvasjs.min.js"></script>

JavaScript

var jsonData = {
  "Centres":[
    {y: 60, label: "A.G.S. NORTE DE HUELVA"},
    {y: 37, label: "A.G.S. CAMPO DE GIBRALTAR"},
  {y: 31, label: "A.G.S. DE OSUNA"},
  {y: 45, label: "A.G.S. ESTE DE MALAGA-AXARQUIA"},
  {y: 84, label: "A.G.S. NORDESTE DE GRANADA"},
  {y: 72, label: "A.G.S. NORTE DE ALMERIA"},
  {y: 59, label:"A.G.S. NORTE DE CADIZ"},
  {y: 43, label:"A.G.S. NORTE DE CORDOBA"},
  {y: 126, label: "A.G.S. NORTE DE JAEN"},
  {y: 30, label: "A.G.S. NORTE DE MALAGA"},
  {y: 29, label: "A.G.S. SERRANIA DE MALAGA"},
  {y: 46, label: "A.G.S. SUR DE CORDOBA"},
  {y: 80, label: "A.G.S. SUR DE GRANADA"},
  {y: 36, label: "A.G.S. SUR DE SEVILLA"},
  {y: 40, label:"ALJARAFE"},
  {y: 110, label:"ALMERIA"},
  {y: 35, label: "BAHIA DE CADIZ - LA JANDA"},
  {y: 23, label: "CONDADO - CAMPIÑA"},
  {y: 23, label:"CORDOBA"},
  {y: 24, label:"COSTA DEL SOL"},
  {y: 24, label:"GRANADA"},
  {y: 31, label:"GUADALQUIVIR"},
  {y: 37, label:"HUELVA COSTA"},
  {y: 38, label:"JAEN"},
  {y: 31, label:"JAEN SUR"},
  {y: 37, label:"MALAGA"},
  {y: 142, label:"METROPOLITANO DE GRANADA"},
  {y: 45, label:"PONIENTE DE ALMERIA"},
  {y: 36, label:"SEVILLA"},
  {y: 48, label:"SEVILLA NORTE"},
  {y: 15, label:"VALLE DEL GUADALHORCE"}
  ],

    "By health centres":[
      {y: 6, label: "A.G.S. NORTE DE HUELVA"},
      {y: 11, label: "A.G.S. CAMPO DE GIBRALTAR"},
    {y: 8, label: "A.G.S. DE OSUNA"},
    {y: 9, label: "A.G.S. ESTE DE MALAGA-AXARQUIA"},
    {y: 7, label: "A.G.S. NORDESTE DE GRANADA"},
    {y: 7, label: "A.G.S. NORTE DE ALMERIA"},
    {y: 20, label:"A.G.S. NORTE DE CADIZ"},
    {y: 4, label:"A.G.S. NORTE DE CORDOBA"},
    {y: 22, label: "A.G.S. NORTE DE JAEN"},
    {y: 5, label: "A.G.S. NORTE DE MALAGA"},
    {y: 4, label: "A.G.S. SERRANIA DE MALAGA"},
    {y: 15, label: "A.G.S. SUR DE CORDOBA"},
    {y: 9, label: "A.G.S. SUR DE GRANADA"},
    {y: 21, label: "A.G.S. SUR DE SEVILLA"},
    {y: 11, label:"ALJARAFE"},
    {y: 20, label:"ALMERIA"},
    {y: 23, label: "BAHIA DE...