What are the key statistics from Adam Ringham on the rise of autism diagnoses?

From , here are the main stats and claims repeatedly highlighted about the rise in autism diagnoses:

• Historical rate often cited: about 1 in 50,000 children roughly 30 years ago
• Current rate referenced: about 1 in 36–38 children today
• Argument: this jump is too large to be explained by “better diagnosing” alone
• Emphasis that most families report no autism history in parents or grandparents despite today’s high rates

What are you planning to use these stats for (presentation, debate, social post, etc.)?