Pole vaulting used to kill about 1 person per year in the US, but after rule changes in 2003 it went down to about 1 every five years -http://www.ncbi.nlm.nih.g

Pole vaulting used to kill about 1 person per year in the US, but after rule changes in 2003 it went down to about 1 every five years -http://www.ncbi.nlm.nih.gov/pubmed/22582223 http://www.ncbi.nlm.nih.gov/pubmed/22582223