STANDARD Life has increased its bonus payouts on its 10 year and 30 year life assurance policies which have produced returns to policyholders of 9.7 per cent over 10 years and 13.1 per cent a year over 30 years. Pension policyholders are to benefit from returns of 9.6 per cent over 10 years and 15.4 per cent over 20 years.