I wonder what year that chart was made in.  Time stops around 1900.

Very interesting one.  Where did you find it?I think it could have been made between 1930-1933 because Hindenburg is still mentioned as president (in office from 1924 until 1934) as well as the world wide economic depression (October 1929) and Ramsay McDonald (in office from 1929 until 1935).