Great survey, but when did “Australian” become an ethnic sub-type?

Duncan Riley> MIT has published a great new survey titled “Blog Survey: Expectations of Privacy and Accountability” as featured in the Blog Herald’s news section, however as an Australian I ask the question: when did Australian become an ethnic sub-type? Listed amongst Caucasian, Latino/Hispanic, Pacific Islander and African-American, is Australian!
Are there so many Australian now in the United States, particularly in Hollywood that we can now identify as an ethnic minority? Does this privilege give Australian’s special benefits in the States? Will Australian soon be offered as a foreign language course? All I have to say it’s all bonzer and onya MIT, and havagoodweekend.