Statistic: 
Around 3.67 million Australians are affected by heart, stroke and vascular diseases.
Reference: 

Australian Institute of Health and Welfare (AIHW) 2004. Heart, stroke and vascular diseases – Australian facts 2004. AIHW Cat. No. CVD 27. Canberra: AIHW and National Heart Foundation of Australia (Cardiovascular Disease Series No. 22).