The given line graph illustrates the  workers' income  every month and the cost of 2 different types of TV in Japanese currencies in the period of 1953 to 1973.
From an 
overall
 perspective, it can be observed that Colored and Colorless Linking Words
TVs
 were showing a decrease in the whole timeframe, Use synonyms
whereas
 the income of workers was going up.
Beginning with figures that show the increase. Regarding the worker's salary, It seemed that the income rose through the Linking Words
years
 when it started at 40 Use synonyms
yen
 in the Use synonyms
years
 before a significant increase in the remaining Use synonyms
years
 in order to reach a peak of 180 Use synonyms
yen
 in 1973.
Moving on to categories that were the price of 2 different Use synonyms
TVs
. Related to Colored TV, Use synonyms
this
 type of TV actually started to be sold in 1958 at around 180 Linking Words
yen
  each. Use synonyms
Then
,the cost underwent a considerable decline when it dropped by around 60-70 Linking Words
yen
 (at approximately 110 Use synonyms
yen
) in 1963 before slightly decreasing to 90 Use synonyms
yen
 in the final year of the period. With respect to black and white Use synonyms
TVs
, in the first 4 Use synonyms
years
, it steadily went down from 100 Use synonyms
yen
 to 40 Use synonyms
yen
 and Use synonyms
then
 these Linking Words
TVs
 moderately levelled off when they were sold at just right below 40.Use synonyms