Well, now we know thanks to the Business Book GP2014 and reported on TomorrowNewsF1.com:

Drivers:

1. Fernando Alonso Ferrari – €22m
= Kimi Raikkonen Ferrari – €22m
=Sebastian Vettel Red Bull Racing – €22m
4. Lewis Hamilton Mercedes – €20m
5. Jenson Button McLaren-Mercedes – €16m
6. Nico Rosberg Mercedes – €12m
7. Felipe Massa Williams – €4m
= Nico Hulkenberg Force India F1 – €4m
9. Romain Grosjean Lotus F1 Team – €3m
= Pastor Maldonado Lotus F1 Team – €3m
= Sergio Perez Force India F1 – €3m
12. Adrian Sutil Sauber – €2m
13. Kevin Magnuseen McLaren-Mercedes – €1m
= Valtteri Bottas Williams – €1m
15. Daniel Ricciardo Red Bull Racing – €750,000
= Jean-Eric Vergne Scuderia Toro Rosso – €750,000
17. Jules Bianchi Marussia – €500,000
18. Esteban Gutierrez Sauber – €400,000
19. Daniil Kvyat Scuderia Toro Rosso – €250,000
20. Max Chilton Marussia – €200,000
21. Marcus Ericsson Caterham F1 – €150,000
= Kamui Kobayshi Caterham F1 – €150,000

What the F1 teams spent on drivers in 2014:

1. Ferrari – €44m
2. Mercedes – €32m
3. Red Bull Racing – €22.75m
4. McLaren-Mercedes – €17m
5. Force India – €7m
6. Lotus F1 team – €6m
7. Williams – €5m
8. Sauber – €2.4m
9. Scuderia Toro Rosso – €1m
10. Marussia – €700,000
11. Caterham – €300,000