I'll interpret "accidents" as those resulting in a fatality, and restrict my answer to the USA. In the United States we can go for multiple years without a single tandem fatality. That said a couple of years ago we had two students fall out of the harness. As a result, harness design were modified, and older design harnesses taken out of service, also efforts were made to reassure that instructors were properly adjusting the student harnesses. In the last ten years or so there have also been a couple of double tandem fatalities (both instructor and student).
There is no specific annual number for trampoline purchases, but it is estimated that millions of trampolines are sold worldwide each year. The popularity of trampolines for both recreational and fitness purposes contributes to their consistent market demand.
many
I don't know how many accidents but there's about 43,000 people killed by car accidents per year. Hope that helps.
There are about 2 to 3 million car accidents each year
!7,000 accidents last year, 2647 of these were anal injuries
about 40,000 in a year
There are many teenagers that are involved in drinking and driving accidents each year. This number is in the thousands.
About 100000000 accidents happen per year.
7000 a year
8,924
1,000,250,000
There are around 40,000 deaths due to car accidents each year in U.S. and is increasing every year.