Levels XP from lvl50 to lvl75
Here is a small table showing how much XP is needed form level to level.
Rewards and what buildings become available are noticed as well.
Remember that everything is subject to change before life version comes out :D
Level---->Needed XP---->Reward-------------------------->Allows to build
50------->3.746.000----->2500 gems, 700 gold coins---->Fountain, Island Storehouse, Explore distant island
51------->4.696.651----->800 gold coins------------------>Units-change for garrisons
52------->5.888.556----->800 gold coins------------------>Mahogany sawmill
53------->7.382.940----->800 gold coins------------------>Exotic wood cutter, Exotic forester
54------->9.256.565----->800 gold coins------------------>Platinum smelter, Platinum weaponsmith, Elite Barracks, Prolonged treasure searches, Swordsman
55------->11.605.675---->500 gems, 800 gold coins----->Homestead, Weaver, Saddle Maker, Elite stables, Mounted Swordsman, Knight
56------->14.550.936---->900 gold coins------------------>Very long adventure search, Arquebus maker, Marksman, Armored Marksman, Mounted Marksman
57------->18.243.638---->900 gold coins------------------>Wagon Maker, Foundry, Besieger
58------->22.873.466---->900 gold coins
59------->28.678.241---->900 gold coins
60------->35.956.137---->500 gems, 900 gold coins----->Geologist can find granite quarries, Granite mason
61------->45.081.001---->1000 gold coins---------------->Geologist can find titanium mines, Titanium mine
62------->56.521.552---->1000 gold coins---------------->Geologist can find saltpeter mines, Saltpeter mine
63------->70.865.459---->1000 gold coins
64------->88.849.529---->1000 gold coins
65------->111.397.554--->500 gems, 1000 gold coins
66------->139.667.764--->2500 gems, 1000 gold coins
67------->175.112.322--->1500 gold coins
68------->219.551.916--->1500 gold coins
69------->275.269.287--->1500 gold coins
70------->345.126.481--->500 gems, 1500 gold coins
71------->432.711.870--->2000 gold coins--------------->Manor
72------->542.524.473--->2000 gold coins
73------->680.205.062--->2000 gold coins
74------->852.825.908--->2000 gold coins
75------->1.069.254.067->2500 gems, 2000 gold coins