Statistics are great indicators of standard of living - I suggest that you say "great indicators for a standard", or "great indicators for the standard"
living but there are other less - add a comma before the but
Less measurable factors that need to be taken into account...work balance are very important. - You just mentioned that these are less measurable, however here you're saying they're "very important"
safe lives and divorce is virtually heard of. - "Virtually unheard of." You could also say "Rarely heard of." Or, just "rare."
we have suicide mortality rate of 13.2 people/100,000 people - "we have a suicide mortality rate..."
The Solomon Islands may be a lovely place to visit but very few Australians would actually like to call it their home. - "...loveplace to visit, (add a comma) but very few..."
