public function TSPMGemiddeldJanContact() {
			$dataList = Contact::get();
		$dataList =  array('Date:GreaterThan' => ('2013-1-1'), 'Date:LessThan' => date('2013-1-31')    );
		$averageJan = $dataList->avg('totaalscoreprocentcounttotaal');
		return $averageJan;
}