They follow a seasonal pattern reflecting the academic year, with lower rates in the autumn followed by a gradual rise in spring and early summer to a peak in late summer.
The safety of the entire world is a concern with the rise of fundamentalist Islamist groups in the wake of the Arab Spring and the possible nuclear ambitions of Iran and North Korea.
At the end of this week, Ed Miliband is safe in his job, he has shown he can rise to the occasion, he has raised morale in his party and they leave withaspring in their step as they hum the Red Flag (most don't know the words these days) and make their way home.