Final answer:
The highest percentage of smokers is found among Swedish men, with 17% being smokers and an additional 19% using snus, which can be considered a recreational drug. Smoking rates have declined in most Western countries, including Australia and the United Kingdom.
Step-by-step explanation:
In terms of the highest percentage of smokers, it varies across different age groups and countries. However, based on the provided information, Swedish men have the highest percentage of tobacco users, with 17% being smokers and an additional 19% using a product called 'snus', which can be considered a recreational drug.
It is important to note that smoking rates have been declining in most Western countries, including Australia where the proportion of men and women who smoked in 1976 was 43% and 33% respectively. In 2014-2015, it was 16.9% and 12.1%.
In the United Kingdom, two-thirds of smokers want to quit smoking, with about half attempting to do so each year. However, only about 5% are successful in quitting.