The table illustrates historical and projected population data for Australia, Canada, New Zealand, and the United States across five specific years between 1990 and 2050. Overall, all four nations experienced consistent population growth throughout the period, with the United States maintaining a significantly larger population than the other three countries combined.
The United States began with a population of 249.9 million in 1990, which steadily climbed to 320.6 million by 2020, with a further projection of 349.0 million by 2050. Canada followed a similar upward trajectory, starting at 26.6 million in 1990 and reaching 36.9 million by 2020, with an expected figure of 39.0 million by 2050.
Australia and New Zealand showed much smaller population scales. Australia’s population rose from 17.1 million in 1990 to 22.7 million in 2020, and it is projected to reach 26.0 million by 2050. New Zealand remained the least populous nation throughout the entire timeframe, growing from 3.4 million in 1990 to 4.3 million in 2020, with a modest projected increase to 4.7 million by 2050. In summary, while all countries show a positive trend, the disparity in total population size between the United States and the other nations remains substantial.