Farming, fishing, and forestry far outweighs other occupational groups in suicide rates for men [1].
When standardized against population, at a rate of 90.5 per 100,000 people [2]; vs the next highest, construction and extraction (52.5).
For comparison, computer and mathematical was at 32.8 for men and 12.5 for women.
[1] CDC, 2012 https://www.cdc.gov/mmwr/volumes/65/wr/mm6525a1.htm
[2] https://www.cdc.gov/mmwr/volumes/65/wr/mm6525a1.htm#modalIdS...