Here is a chart that will get your attention: <a href="http://research.stlouisfed.org/fred2/fredgraph?chart_type=line&width=1000&height=600&preserve_ratio=true&s%5b1%5d%5bid%5d=AMBNS#" rel="nofollow" target="_blank">http://research.stlouisfed.org/fred2/fredgraph?chart_type=line&width=1000&height=600&preserve_ratio=true&s%5b1%5d%5bid%5d=AMBNS#</a>