1. The data going back 70 years, which is 50 years more than 20, show that suicide has sharply risen.
2. The integrity of data much older than that is substantially in question.
> After two decades of slowly rising, the US suicide rate has stabilized over the past few years. It is now at the same level as the 1950s.
1. The data going back 70 years, which is 50 years more than 20, show that suicide has sharply risen.
2. The integrity of data much older than that is substantially in question.