phCriar grafico de linhas com google Charts + php

<?php
include_once('../connection/connected.php');

$lista = array();
$vl = array();
$i = 0;
$k = 0;

$sql= "
 SELECT
	uf, 
	qtd_habitantes  AS 'qtd'
 FROM tbl_habitantes_estados
 WHERE DATE(inicio_pesquisa) = '$data_pesquisa'
	GROUP BY uf
	ORDER BY qtd DESC ";
$query_consulta = mysql_query($sql) or die(error_msg( mysql_error(), $sql, __LINE__ ));
$linhas_consulta = mysql_num_rows($query_consulta);
while ( $result_consulta = mysql_fetch_object($query_consulta)){
	$uf = $result_consulta['uf'];
	$qtd= $result_consulta[qtd'];
	$lista[$i] = $uf;
	$vl[$i] = $qtd;
	$i = $i+1;
}
?>
		
		<!-- amCharts javascript sources -->
		<script src="http://www.amcharts.com/lib/3/amcharts.js" type="text/javascript"></script>
		<script src="http://www.amcharts.com/lib/3/serial.js" type="text/javascript"></script>
		<script src="http://www.amcharts.com/lib/3/themes/light.js" type="text/javascript"></script>

		<!-- amCharts javascript code -->
		<script type="text/javascript">
			AmCharts.makeChart("chartdiv",
				{
					"type": "serial",
					"categoryField": "category",
					"startDuration": 1,
					"classNamePrefix": "",
					"theme": "light",
					"categoryAxis": {
						"gridPosition": "start",
						"parseDates": false
					},
					"chartCursor": false,
					"chartScrollbar": false,
					"trendLines": false,
					"graphs": [
						{
							"fillAlphas": 1,
							"id": "",
							"title": "graph 1",
							"type": "column",
							"valueField": "column-1"
						}
					],
					"guides": [],
					"valueAxes": [
						{
							"id": "ValueAxis-1",
							"title": "Titulo Lateral"
						}
					],
					"allLabels": [],
					"balloon": {},
					"titles": [
						{
							"id": "Title-1",
							"size": 15,
							"text": "Titulo do Grafico"
						}
					],
					"dataProvider": [

//Aqui as colunas devem ser mostradas como a linha de baixo.
//					{"category": "TO","column-1": 4}

					<?php 
					$k = $i;
					for($i=0;$i<$k;$i++){?>
					{"category":"<?php echo $lista[$i]?>","column-1":<?php echo $vl[$i]?>},
					<?php
					}?>
					]

				}
			);
	</script>
	<div id="chartdiv" style="width: 900; height: 400px; background-color: #FFFFFF;" ></div>