Extract all risk factors for developing cardiovascular diseases for which numbers about their  contribution are given and rank them by their relative importance.

Context: The underlying mechanisms for developing cardiovascular diseases vary depending on the disease. It is estimated that dietary risk factors are associated with 53% of CVD deaths. Coronary artery disease, stroke, and peripheral artery disease involve atherosclerosis. This may be caused by high blood pressure, smoking, diabetes mellitus, lack of exercise, obesity, high blood cholesterol, poor diet, excessive alcohol consumption,and poor sleep, among other things. High blood pressure is estimated to account for approximately 13% of CVD deaths, while tobacco accounts for 9%, diabetes 6%, lack of exercise 6%, and obesity 5%. Rheumatic heart disease may follow untreated strep throat.

Answer: 1. Dietary Risk Factors
2. High Blood Pressure
3. Tobacco
4. Diabetes
5. Lack of exercise
6. Obesity