This is the amount of people that have 99 in each skill as of 6/8/2008. As you can see cooking, strength, and fletching pretty much dominate in the skills with most 99s. In my opinion i think Runecrafting is the hardest skill to get 99 with. Attack - ........38,800 Defence - ......25,500 Strength - .....48,000 Hitpoints - .....29,800 Ranged - .......18,600 Prayer - ..........5,200 Magic - .........17,400 Cooking - .......46,500 Woodcutting - 18,300 Fletching - .....46,400 Fishing - .........8,400 Firemaking - ..13,200 Crafting - .......2,600 Smithing - ......1,800 Mining - .........1,300 Herblore - ......1,100 Agility - .........1,500 Thieving - ......5,200 Slayer - .........1,700 Farming - .......1,700 Runecraft - .......850 Hunter - .........4,500 Construction - ...700 Summoning - .....330