Here is a interesting pew research paper on US immigration over last 150 years, decade by decade in numbers (w.r.t total population etc.) and maps.
www.pewresearch.org
This is one picture that comparing1920 to 2020. But this doesn't represent how it varied each decade w.r.t originating countries.
From wiki


How the origins of America’s immigrants have changed since 1850
In 2022, the number of immigrants living in the U.S. reached a high of 46.1 million, accounting for 13.8% of the population.

This is one picture that comparing1920 to 2020. But this doesn't represent how it varied each decade w.r.t originating countries.

Why has the immigrant population changed over the years?
Reasons behind the changes in the U.S. immigrant population since 1965 include:
- A more equitable U.S. immigration law. The 1965 Immigration and Nationality Act opened up legal immigration from Asia and Latin America. The law it replaced had favored immigrants from Northern and Western Europe and mostly barred those from Asia.
- Unauthorized immigration. Unauthorized immigration to the U.S. began to grow in the 1970s, which made the total number of immigrants go up. Most of those who came before 1982 acquired legal status after the passage of the 1986 Immigration Reform and Control Act. However, unauthorized immigrants continued to come in large numbers.
- Further changes in U.S. immigration law. A revision to the 1965 act in 1990 allowed more legal immigrants to enter the U.S. and provided alternative ways for people to immigrate, increasing the diversity of origins.

From wiki
