A new survey suggests that more than half of households in Tokyo likely live with less than 5 million yen($42,000) in annual income, a figure which has grown by 13 percent in the last 5 years.

The Tokyo Metropolitan Government randomly surveyed 6,000 Tokyo households of in November and December last year. A total of 3,775 households, or 65 percent, responded. Of those, 51 percent said they live with annual income of less than 5 million yen. The rate was up 13 percent compared to the previous survey 5 years ago.

Furthermore, the survey found that households whose annual income is less than 3 million yen ($25,200) also increased 9.3 percent to 27 percent compared to 5 years ago.

Rich households are decreasing in Tokyo as well. The results showed that households who earn more than 20 million yen ($168,070) fell 1.7 percent to 1.6 percent in the same period. Upper-middle class households who earn from 10 million yen($84,030) to 20 million yen also decreased 3.2 points to 11.5 percent.

The survey also found that almost 30 percent of households mainly rely on their pension or welfare benefits. Also, 22 percent of households likely have no one to work. It was the highest record since the government began conducting the survey in 1981