The supplied illustration of the line graph delineates the share of income earned by the top 1% of the population in seven countries — the United States, the United Kingdom, Canada, France, Germany, Italy and Japan — between 1975 and 2015. Overall, it is evident that the proportion of income held by the richest 1% increased in all countries in the period, though theere were slight disparities between nations.
There was a big rise in the share of income in the United States and the United Kingdom. In the US, the proportion was around 9% in 1975, more than the other six countries. However, income share increased sharply over the next 40 years to reach about 20% in 2015, which is the highest of that year. The same pattern was followed by the UK, where the figure started at about 6% and grew a lot, finishing at around 15%.
In contrary, Canada, Germany, France, Italy and Japan saw insignificant growth over the period. In Canada, the figure was about 8% in 1975 and went up slowly to just over 12% in 2015. Germany started at around 8% and, after falling a bit, increased again to end at around 11%. The figure for Italy began near 7% and went up moderately to around 11% at the end. France had about 8% in the beginning, dropped a little, and then rose slowly to about 10%. Japan was similar, starting just under 8%, dropping a bit, and increasing slowly to about 10% too. Among these five countries, Canada was the highest most of the period, while the percentages in France, Germany, Italy and Japan was just under Canada in 40 years.