Counterfactual
The Parallel Lives of Siobhan and Daniella
In 90 girls, Siobhan found its level. 50 years earlier, Daniella occupied that same statistical address.
1956–2025
Siobhan
Peak year
1980
Peak births
282
Latest count
90
Status
Rising
Peak generation
Gen X
1951–2025
Daniella
Peak year
2007
Peak births
1,171
Latest count
657
Status
Declining
Peak generation
Gen Z
In 90 girls, Siobhan found its level. 50 years earlier, Daniella occupied that same address. One peaked in the Gen Z era; the other in the Gen X world. They never met. But the data remembers them both.