Charles Blow has an excellent chart up today comparing America to other advanced economies on a number of measures on the New York Times today. I'd like to see per capita GDP, 10 year average growth rate, workforce participation, government spending as % of GDP, and dependency ratio (with separate entries for over 65 and under 18) added to it to capture what I feel are the most relevant variables, but it's still good. I'd also like to see this done for 1960, 1970, and 1980 as well. In those decades I believe America would score much higher. The chart basically points out that on a number of measures we've fallen behind our peers (Canada and Australia serve as the best examples of where we should be at). Obviously we're still tops on per capita GDP (barring micro states, which aren't good for comparison to territorial states), but other measures look bad and will likely translate into lower GDP growth in the future.
If I get really, really bored I may try to do this sometime, the work doesn't sound that hard (though some of the measures, such as Gallop Global Wellbeing probably aren't available). One of the main themes I've been taking up is that we have been going from top dog and losing our relative spot since the 1980s. This comparative historical data would be necessary to illustrate the point. Without knowing when things started to go wrong, we can't identify with any certainty what changed here (or didn't change here but changed elsewhere) that has been causing our relative decline. I've obviously got some ideas, but haven't yet gotten around to compiling hard historical data to prove the point.