 In the primary school sector, the numbers of children in Welsh-medium schools (or in the Welsh-medium stream of dual stream schools) has grown steadily in recent years.Welsh Government statistics show that in 2014, 22.2 per cent of 7 year old learners were assessed through the medium of Welsh first language 

"Information taken from Schools in Wales" (accessed 23 July 2010)
"Update for last three years taken from School Census Results, 2012" (accessed 17 May 2013)

The percentage of children in Welsh-medium secondary schools is slightly less than in primary schools, but has also grown, although it appears to have stabilised in the 2010s.Including Middle School pupils from 2012/2013.