Up to five states with the largest reduction in the proportion of out-of-wedlock births can receive an award.
"Premier League surveys for years show a consistent reduction in the proportion of young people, who pay full price from 16," Conn wrote.
More broadly, the MDGs have been criticised for targeting a reduction in the proportion of people living in poverty, rather than the absolute number.
And, as an insurance policy, they can also press for the reduction in the proportion of Labour MPs needed to nominate a leadership contender.
And since 2012, there has been a 40% reduction in the proportion of mature and part-time students at universities, following the introduction of tuition fees.
The result is a continuing reduction in the proportion of inpatient surgical Medicare patients and increase in the proportion of inpatient Medicare nonsurgical (or "medical") patients.
There has been a 2.5% reduction in the proportion of offenders proven to have committed another crime between 2011 and March 2017.
Political parties at Westminster must take steps to ensure the upcoming review of constituency boundaries does not result in a reduction in the proportion of women in parliament, says a cross-party committee of MPs.
In the case of this year's A-levels, awards are linked to the GCSE results of 2013, which saw a significant reduction in the proportion of A grades, particularly in sciences, history and geography.
There was a 42% reduction in the number of people supported by specialist homelessness services, and a 25% reduction in the proportion of those clients with drug and alcohol issues.
There was a similar reduction in the proportion of drug-taking by 12- to 13-year-olds, with 5% of boys and 4% of girls saying they had taken an illegal drug at least once.
