Bank of Thailand. Several studies published by the Bank of Thailand have included the construction of growth accounts. The most detailed is by Katharit (2001), and it provides calculations of TFP for the total economy, agriculture, non-agriculture, and manufacturing for the period of 1980-96. The growth in the capital input is measured by changes in the net capital stock. The labor input is total work hours as estimated from the survey of the labor force. The author uses the real wage rate in each sector as a proxy for changes in labor quality, multiplying it by hours to obtain an index of total labor input. The result is extraordinary estimates of the improvement in labor quality ranging from 2.6 percent per year in agriculture to 3.6 percent for the overall economy