From the CampaignForLiberty.com:

This year, the Cost of Government Day falls on July 16th. Americans for Tax Reform defines COGD as “the date of the calendar year on which the average American worker has earned enough gross income to pay off his or her share of spending and regulatory burdens imposed by government on the federal, state and local levels.”

They estimate that the cost of government now consumes 53.9% of national income, with the average American worker spending 83.7 days laboring to pay his “share” of federal spending. The average worker spends 50.5 days for state and local spending. Keep in mind that this is just spending, not regulation, which takes its own toll from you. Regulation requires 62.6 days, and “is estimated to cost 17.2 percent of national income.”

Don't forget that this discounts the inflation tax. This is when fiat money is created in order to pay for something, which results in the value of the money you hold going down. Thus, without actually seizing any of your property, the civil government, working with the Federal Reserve, is able to take your wealth and use it for their own purposes. Clever, isn't it?