The graph demonstrates the average Japanese income per month as well as the costs of black and white and colour televisions from 1953 to 1983, with Yen as the unit of currency.
Overall, the monthly income of Japanese people went up noticeably over the period of 30 years, whereas there was a downward trend in the prices of televisions. Generally, Japanese consumers had a preference for colour televisions over black and white ones and consequently, the money needed to purchase a colour television was higher than a black and white.
Looking first at the monthly earning of the Japanese, it can be seen that the figure started at under 20 thousand Yen in 1953 then marginally grew to over 20 thousand Yen in 1970, which was too low to afford neither kind of television on the market. Later on, it moderately raised to over 30 thousand Yen in 1976 – higher than the cost of a black and white television but significantly lower than a colour one at the time. However, from 1976 to 1983, this number soared to nearly 70 thousand Yen as it markedly surpassed the costs of both colour and black and white televisions.
Turning to how the two kinds of televisions were priced over the same period, both experienced a decline in value. Originally priced at 110 thousand Yen in 1953, black and white televisions dropped sharply down to the cost of 40 thousand Yen in 1960. Then, this number gradually fell to 20 thousand Yen at the end of the period. Colour televisions followed the same pattern, with a steady slide from the initial cost of 100 thousand Yen in 1960 to nearly 50 thousand Yen in 1983.