diff --git a/htdocs/compta/facture/class/facturestats.class.php b/htdocs/compta/facture/class/facturestats.class.php
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+<?php
+/* Copyright (C) 2003      Rodolphe Quiedeville <rodolphe@quiedeville.org>
+ * Copyright (c) 2005-2008 Laurent Destailleur  <eldy@users.sourceforge.net>
+ * Copyright (C) 2005-2009 Regis Houssin        <regis@dolibarr.fr>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+/**
+ *       \file       htdocs/compta/facture/stats/facturestats.class.php
+ *       \ingroup    factures
+ *       \brief      Fichier de la classe de gestion des stats des factures
+ *       \version    $Id$
+ */
+include_once DOL_DOCUMENT_ROOT . "/core/class/stats.class.php";
+include_once DOL_DOCUMENT_ROOT . "/compta/facture/class/facture.class.php";
+include_once DOL_DOCUMENT_ROOT . "/fourn/class/fournisseur.facture.class.php";
+
+/**
+ *       \class      FactureStats
+ *       \brief      Classe permettant la gestion des stats des factures
+ */
+class FactureStats extends Stats
+{
+	var $db ;
+
+	var $socid;
+	var $where;
+
+	var $table_element;
+	var $field;
+
+	/**
+	 * Constructor
+	 *
+	 * @param 	$DB		Database handler
+	 * @param 	$socid	Id third party
+	 * @param 	$mode	Option
+	 * @return FactureStats
+	 */
+	function FactureStats($DB, $socid=0, $mode)
+	{
+		global $conf;
+
+		$this->db = $DB;
+		if ($mode == 'customer')
+		{
+			$object=new Facture($this->db);
+			$this->from = MAIN_DB_PREFIX.$object->table_element;
+			$this->field='total';
+		}
+		if ($mode == 'supplier')
+		{
+			$object=new FactureFournisseur($this->db);
+			$this->from = MAIN_DB_PREFIX.$object->table_element;
+			$this->field='total_ht';
+		}
+
+		$this->socid = $socid;
+		$this->where = " fk_statut > 0";
+		$this->where.= " AND entity = ".$conf->entity;
+		if ($mode == 'customer') $this->where.=" AND (fk_statut != 3 OR close_code != 'replaced')";	// Exclude replaced invoices as they are duplicated (we count closed invoices for other reasons)
+		if ($this->socid)
+		{
+			$this->where.=" AND fk_soc = ".$this->socid;
+		}
+
+	}
+
+
+	/**
+	 * 	\brief		Renvoie le nombre de facture par annee
+	 *	\return		array	Array of values
+	 */
+	function getNbByYear()
+	{
+		$sql = "SELECT YEAR(datef) as dm, count(*)";
+		$sql.= " FROM ".$this->from;
+		$sql.= " GROUP BY dm DESC";
+		$sql.= " WHERE ".$this->where;
+
+		return $this->_getNbByYear($sql);
+	}
+
+
+	/**
+	 * 	\brief	Renvoie le nombre de facture par mois pour une annee donnee
+	 *	\param	year	Year to scan
+	 *	\return	array	Array of values
+	 */
+	function getNbByMonth($year)
+	{
+		$sql = "SELECT MONTH(datef) as dm, count(*)";
+		$sql.= " FROM ".$this->from;
+		$sql.= " WHERE YEAR(datef) = ".$year;
+		$sql.= " AND ".$this->where;
+		$sql.= " GROUP BY dm DESC";
+
+		$res=$this->_getNbByMonth($year, $sql);
+		//var_dump($res);print '<br>';
+		return $res;
+	}
+
+
+	/**
+	 * 	\brief	Renvoie le montant de facture par mois pour une annee donnee
+	 *	\param	year	Year to scan
+	 *	\return	array	Array of values
+	 */
+	function getAmountByMonth($year)
+	{
+		$sql = "SELECT date_format(datef,'%m') as dm, sum(".$this->field.")";
+		$sql.= " FROM ".$this->from;
+		$sql.= " WHERE date_format(datef,'%Y') = ".$year;
+		$sql.= " AND ".$this->where;
+		$sql.= " GROUP BY dm DESC";
+
+		$res=$this->_getAmountByMonth($year, $sql);
+		//var_dump($res);print '<br>';
+		return $res;
+	}
+
+	/**
+	 *	\brief	Return average amount
+	 *	\param	year	Year to scan
+	 *	\return	array	Array of values
+	 */
+	function getAverageByMonth($year)
+	{
+		$sql = "SELECT date_format(datef,'%m') as dm, avg(".$this->field.")";
+		$sql.= " FROM ".$this->from;
+		$sql.= " WHERE date_format(datef,'%Y') = ".$year;
+		$sql.= " AND ".$this->where;
+		$sql.= " GROUP BY dm DESC";
+
+		return $this->_getAverageByMonth($year, $sql);
+	}
+
+	/**
+	 *	\brief	Return nb, total and average
+	 *	\return	array	Array of values
+	 */
+	function getAllByYear()
+	{
+		$sql = "SELECT date_format(datef,'%Y') as year, count(*) as nb, sum(".$this->field.") as total, avg(".$this->field.") as avg";
+		$sql.= " FROM ".$this->from;
+		$sql.= " WHERE ".$this->where;
+		$sql.= " GROUP BY year DESC";
+
+		return $this->_getAllByYear($sql);
+	}
+}
+
+?>