National Health Expenditure Accounts

"The National Health Expenditure Accounts (NHEA) are the official estimates of total health care spending in the United States. Dating back to 1960, the NHEA measures annual U.S. expenditures for health care goods and services, public health activities, government administration, the net cost of health insurance, and investment related to health care. The data are presented by type of service, by source of funding, and by type of sponsor..."
National Health Expenditures

Trends in Health Care Cost Growth and the Role of the Affordable Health Care Act

"The Affordable Care Act (ACA) was passed against a backdrop of decades of rapid growth in health care spending in the United States. While much of this historical increase reflects the development of new treatments that have greatly improved health and well-being (Cutler 2004), there is widespread agreement that the system suffered from serious inefficiencies that increased costs and reduced the quality of care that patients receive. A key goal of the ACA was to begin wringing these inefficiencies out of the health care system, simultaneously reducing the growth of health care spending and its burden on families, employers, and state and federal budgets–while increasing the quality of the care delivered.
This report analyzes recent trends in health care costs, the forces driving those trends, and their likely economic benefits..."
Health cost report