The table illustrates past and projected population figures (in millions) for Australia, Canada, New Zealand, and the United States between 1990 and 2050.
Overall, all four countries experienced population growth over the period, and this upward trend is expected to continue into the future. The United States consistently had by far the largest population, while New Zealand remained the least populous country throughout.
In 1990, the population of the United States stood at approximately 250 million, far exceeding the figures for Australia (17.1 million), Canada (26.6 million), and New Zealand (3.4 million). By 2000, populations in all countries had risen moderately, with the US reaching around 275 million and Canada increasing to 31 million.
Looking ahead to 2050, the United States is projected to grow significantly to about 349 million. Similar growth patterns are predicted elsewhere, with Canada and Australia expected to reach roughly 39 million and 26 million respectively. New Zealand, despite remaining the smallest, is forecast to increase steadily to around 4.7 million.
