GreaseMonkey script that puts on top of the citation graph the actual number of citations per year; works on the Google Citations page. In old versions of Chrome and Chromium this should work without a problem. In new versions you'll have to get out of your way to install it, so don't bother and just switch to Firefox and install the GreaseMonke…

citations.user.js

// ==UserScript==
// @name gcitations
// @namespace http://merelo.net/gmscripts
// @description Compute number of citations per year in Google Citations
// @include http://scholar.google.com/citations*
// ==/UserScript==

var imgs = document.getElementsByTagName('img');

var my_url;
var my_img;
for ( var i = 0; i < imgs.length; i ++ ) {
    if ( imgs[i].src.match(/chart\?chs/)) {
	my_url = imgs[i].src;
	my_img = imgs[i];
    }
}

var params = my_url.split(/&/);
var max;
var citations;
for ( var p in params ) {
    var values = params[p].split(/=/ );
    if ( values[0] == 'chxr') {
	var maxes = values[1].split(/,/);
	var max = maxes[2];
    }
     if ( values[0] == 'chd') {
	 var tsplit = values[1].split(/:/);
	 citations = tsplit[1].split(/,/); 
     }
}

var numbers = '';
for ( c = 0; c < citations.length; c++ ){
    numbers += Math.round(citations[c]*max/100);
    if ( c < citations.length -1 ) {
	numbers += ", ";	
    }

}
var text = document.createTextNode(numbers);

my_img.parentNode.insertBefore(text,my_img);