GRE General Test: QR-114794 GRE Quantitative Reasoning

NUMBER OFIMMIGRANTS TO THE UNITED STATES BY REGION OF LAST RESIDENCE. 1820-1978(in thousands)

In 1978 approximately what was the average (arithmetic mean)number of immigrants to the United states per country of Europe that is represented?
From 1961 t0 1970, the number of immigrants to the United States from Italy was 214 thousand. Approximately what percent of the total number of immigrants to the United States from Europe during that decade were from Italy?