"There's no question that there have been significant changes in the markets over the last few years," Mr. Ketchum said.
There have also been significant changes in the ratio among two American ethnic groups: over the last 20 years, the sex ratio for Chinese-Americans has risen to 107.7 from 104.6, and for Japanese-Americans to 106.4 from 102.6.
While there have been significant changes in the way that the media cover women's sport, he says; "The temptation by the media to portray women in a sexist way still exists.
My mother's experience was, of course, radically different from that of other members of my family who migrated here later, after there had been significant changes in U.S. immigration policy, in 1965, 1992, and, especially, post-9/11.
In recent months there have been significant changes in the way the CQC operates, and it now has a much clearer vision about its role and is establishing a more robust and accountable methodology for how it regulates care services and differentiates them on quality.
Recently, there have been significant changes in engineering accreditation practices in Australia and North America.
