Hiragana Times reports:
Among international couples, foreign husbands and Japanese wives make up about 20 percent. Looking at the statistics by nationality. Koreans were involved in 2,235 marriages, followed by Americans in 1,529 marriages, Chinese in 890, British in 334 and Brazilians in 265 marriages respectively. Foreign wives and Japanese husbands make up about 80 percent, led by Chinese in 10,242 marriages followed by Filipino in 7,794 marriages, Koreans in 5,318, Thai in 1,445 and Brazilians [typically Japanese-Brazilians] in 296...
Statistics prove that men with low incomes and women with high incomes are highly likely to be unmarried. However, Japanese me with low incomes are still rich for those who live in developing countries and the situation will meet their conditions. Among foreigners Japanese women generally want to marry Western men.
How about the divorce rate among international couples? According to statistics from the Ministry of Health, Labour and Welfare in 2003, while the divorce rate among Japanese couples was 38 percent, for international couples, it was 42 percent, a little higher. In the case of foreign husbands, 39 percent and in the case of foreign wives, 43 percent.
I've never seen a divorce rate figure for interracial marriages in America. If you have, please let me know because I get asked about it a lot.