Economy of Japan
The Japanese agricultural sector accounts for about 1.4% of the total country's GDP. Only 12% of Japan's land is suitable for cultivation. Due to this lack of arable land, a system of terraces is used to farm in small areas. This results in one of the world's highest levels of crop yields per unit area, with an overall agricultural self-sufficiency rate of about 50% on fewer than 56,000 km² (14 million acres) cultivated.
Housing in Japan
A survey conducted by the Management and Coordination Agency in 1983 found that there were 34.75 million occupied dwellings in Japan, of which 46.1% were built of timber, 31.3% of fireproof timber, and 22.6% of ferroconcrete or other nontimber materials. The same survey found that detached housing accounted for 64.3% off all housing in Japan, with the ratio falling in urban areas. In the 23 wards of Tokyo, for instance, multi-unit structures such as apartment houses accounted for 62.5% of all housing in those wards. In terms of tenure, 62.4% of housing in Japan consisted of owner-occupied dwellings, 24.3% of units leased by the private sector, 7.6% of units leased by the public sector, and 5.2% of housing for government workers and company employees.