You are being WAY too Americacentric. Those salaries and profits didn't go up on the backs of American labor alone. If you want to be fair, compare the rise in salaries of executives to the wages of Americans and every other country we've out sourced to in the last 30 years. You will likely find that average wages in all those countries have gone up tenfold.
Wages in countries are the responsibility of their people. Why compare their wages to American wages? In most countries the executive wages compared to base level workers is around 10:1 but in the USA it is 100:1 or more.
I am talking about salaries of executives of corps like HP, General Electric, Apple, etc, compared to wages of the people these global corporations employ around the world. US corporations don't just maufactore and sell in US anymore, remember? So comparing corporate and CEO profits, which increased due to corps expanding their markets and production to the entire world, with incomes of only one of the countries is somewhat unfair. I could just as easily say that the salary of GE CEO went up by 400%, but the salary of a factory worker in China went up from $0.30 to $4.00, going up 1,400%, and make a completely different graph.
Also, if CEO wages are your concern, then your problem is with corporate shareholders alone. Not governments and not corporations. Don't want excessive CEO salaries? Don't buy the stock, or buy it and vote against those CEO contracts.
Those excessive CEOs wages are the result of eliminating the corporate tax rates that worked under Nixon by Reagan.
Actually, taxes have little to zero to do with it. Salaries are paid out before taxes are calculated, so in a situation where a $6,000,000 salary is being paid, with $20,000,000 remaining as pure profit, the only thing a 70% tax rate will change compared to a 30% tax rate is how much of that profit the corp will have left to give out as dividents to stockholders/retirees. In fact, raising taxes will only give corporations more incentives to squirrel money away before they calculate their final profits, whether it's to CEO bonuses, or tax deductible interest loans. Those excessive CEO salaries are actually a result of corps competing for good CEOs (very few around to chose from), and keep raising their incentives to try to attract ones of their competitors.