Passenger figures
CAA stats out today show that BRS has handled over 8 million passengers for the first time in a 12-month period: 8,004,995 is the rolling 12-month total at the end of June with a 10.2% (852,405) increase on the monthly figure.
The 8 million milestone comes just 14 months after the airport breached 7 million for the first time in April 2016.
At the rate it has grown in the first six months of this year BRS is on course to handle in the region of 8.4 million passengers in 2017 as a whole, which would be an increase of over 2 million in three years.
BACF
HarrytheDog
I don't know how IBZ (or PMI or AGP) are doing but it's possible to work out the Florence loads from today's CAA stats.
In June the route carried 422 passengers, average load 52.75, load factor 69.4%. easyJet's BRS-PSA (Pisa) which is a sort of competitor saw its numbers increase by 43% to 7,839 following enhanced frequencies this summer.
The BACF Florence route from BHX handled 339 passengers which, as you mentioned, might reflect the different flight timings there.