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.