Autism from the 1960s to now:
1960s: 0.04% (1 in 2,50
1970s: 0.05% (1 in 2,00
1980s: 0.10% (1 in 1,00
1990s: 0.30% (1 in 333)
2000s: 0.67% (1 in 15
2010s: 1.47% (1 in 68, mid-decade)
2020s: 2.00% (1 in 50, current estimate)
The increase is attributed to factors like better diagnostic criteria, awareness, and broader definitions of autism.