ประกาศตัวแปรไว้บนสุด แบบ Array แต่พอจะเอาข้อมุลมาใช้ มัน error ว่า <b>Notice</b>: Undefined index

$data = array('year'=>array(),'general'=>array());
$data = array('year'=>array(),'insurance'=>array());
$data = array('year'=>array(),'partner'=>array());

for($year=$nowYear;$year>=$GraphYear;$year--) 
{ 
	$data['year'][] = (int)$year+543;
    
    for($month=1;$month<=12;$month++)
    {
    
    $strBar_general=".......";
    $strBar_insurance".......";
    $strBar_partner".......";
    
    
    $objBar_general = odbc_exec($conn,$strBar_general) or die ("Error SQL [".$strBar_general."]");
        $objBar_insurance = odbc_exec($conn,$strBar_insurance) or die ("Error SQL [".$strBar_insurance."]");
        $objBar_partner = odbc_exec($conn,$strBar_partner) or die ("Error SQL [".$strBar_partner."]");

        $OPDLinegraph_general=(odbc_fetch_object($objBar_general));
        $OPDLinegraph_general = !empty($OPDLinegraph_general) ?  $OPDLinegraph_general->OPDLinegraph_general : 0;
        
        $OPDLinegraph_insurance=(odbc_fetch_object($objBar_insurance));
        $OPDLinegraph_insurance = !empty($OPDLinegraph_insurance) ?  $OPDLinegraph_insurance->OPDLinegraph_insurance : 0;
        
        $OPDLinegraph_partner=(odbc_fetch_object($objBar_partner));
        $OPDLinegraph_partner = !empty($OPDLinegraph_partner) ?  $OPDLinegraph_partner->OPDLinegraph_partner : 0;
        
        //$OPDgeneral=0;
        //$OPDinsurance=0;
        //$OPDpartner=0;
        
            $OPDgeneral = (int)$OPDLinegraph_general;
            $OPDinsurance = (int)$OPDLinegraph_insurance;
            $OPDpartner = (int)$OPDLinegraph_partner;
        
            $data[$year+543]['general'][]= $OPDgeneral;
            $data[$year+543]['insurance'][]= $OPDinsurance;
            $data[$year+543]['partner'][]= $OPDpartner;
    }
}

Array
(
    [year] => Array
        (
            [0] => 2561
            [1] => 2560
            [2] => 2559
        )

    [partner] => Array
        (
        )

    [2561] => Array
        (
            [general] => Array
                (
                    [0] => 20946
                    [1] => 18876
                    [2] => 19824
                    [3] => 8922
                    [4] => 0
                    [5] => 0
                    [6] => 0
                    [7] => 0
                    [8] => 0
                    [9] => 0
                    [10] => 0
                    [11] => 0
                )

            [insurance] => Array
                (
                    [0] => 10510
                    [1] => 9814
                    [2] => 10683
                    [3] => 4901
                    [4] => 0
                    [5] => 0
                    [6] => 0
                    [7] => 0
                    [8] => 0
                    [9] => 0
                    [10] => 0
                    [11] => 0
                )

            [partner] => Array
                (
                    [0] => 13761
                    [1] => 13007
                    [2] => 14665
                    [3] => 6494
                    [4] => 0
                    [5] => 0
                    [6] => 0
                    [7] => 0
                    [8] => 0
                    [9] => 0
                    [10] => 0
                    [11] => 0
                )

        )
)

<script>
series: [
<?php
    if(count($data)>0)
    {
        for($i=0;$i<count($data['year']);$i++)
        {
    ?>
                {
                    name: 'general',
                    data: <?=json_encode($data['year'][$data['general'][$i]])?>
                },
                {
                    name: 'insurance', 
                    data: <?=json_encode($data['year'][$data['insurance'][$i]])?>
                },
                {
                   name: 'partner',
                   data: <?=json_encode($data['year'][$data['partner'][$i]])?>
                },
    <?php 
        }
    }
    ?>
    ],
</script>

Error
series: [
{
  name: 'general',
  data: <br />
<b>Notice</b>:  Undefined index: general in <b>D:\Apache24\htdocs\Bootstrap\nStatistics\Linegraph.php</b> on line <b>156</b><br />
<br />
<b>Notice</b>:  Undefined index:  in <b>D:\Apache24\htdocs\Bootstrap\Statistics\Linegraph.php</b> on line <b>156</b><br />null
},
{
  name: 'insurance', 
  data: <br />
<b>Notice</b>:  Undefined index: insurance in <b>D:\Apache24\htdocs\Bootstrap\Statistics\Linegraph.php</b> on line <b>160</b><br />
<br />
<b>Notice</b>:  Undefined index:  in <b>D:\Apache24\htdocs\Bootstrap\Statistics\Linegraph.php</b> on line <b>160</b><br />null 
},
{
 name: 'partner',
 data: <br />
<b>Notice</b>:  Undefined offset: 0 in <b>D:\Apache24\htdocs\Bootstrap\Statistics\Linegraph.php</b> on line <b>164</b><br />
<br />
<b>Notice</b>:  Undefined index:  in <b>D:\Apache24\htdocs\Bootstrap\Statistics\Linegraph.php</b> on line <b>164</b><br />
null
},