While 'wealth' and 'incomes' are not an exact match, in the interests of balance:
For those who like to look at the bigger picture the accompanying text is interesting:
The long-run perspective in Figure J.7 can tell more than one story. Taking the end of the “great compression” (1950 to 1980) as the starting point, the conclusion is that for the five English-speaking countries in the graph, inequality (understood as the share of income received by the top 1%) increased strongly to 2011. With the 1920s as the starting point, the “great compression” can be seen as the “aberration” and now the distribution has returned to where it was ninety years ago.