Grafico de barras

Me ha costado pero lo logre

<canvas width="600" height="400"></canvas>

<script>

//Variables del programa

    var lienzo = document.querySelector("canvas");
    var pincel = lienzo.getContext("2d");
    var barra2009 = [6,47,41,3,3];
    var barra2019 = [81,9,3,3,4];
    var colores = ["green","orange","blue","red","gray"];
//Funciones del programa 

    function bloque(x,y,ancho,alto,color) {

        pincel.fillStyle = color;
        pincel.fillRect(x,y,ancho,alto);
        pincel.strokeStyle = "lightblue";
        pincel.strokeRect(x,y,ancho,alto);
    }    

    function inttexto(x,y,texto) {

        pincel.font = "15px Georgia";
        pincel.fillStyle = "black";
        pincel.fillText(texto,x,y);
    }

    function barraG(x, y, barra, colores, texto) {

        inttexto(x + 7, y-10, texto);

        var altosuma = 0;
        for (var z = 0; z < barra.length; z++) {
            var alto = barra[z];
            bloque(x, y + altosuma, 50, alto,colores[z]);
            altosuma = altosuma + alto;

        }
    }

//Programa

    barraG(50, 50, barra2009, colores, "2009");
    barraG(150, 50, barra2019, colores, "2019");

</script>