Those numbers in that report is misleading since most countries have different educational systems. In norway we do not have anything that resembels college in the american meaning. We start at school at age 6 where we go thru a 7 year "childschool" ( ill translate directly from norwegian ), then a 3 year "youthschool". These 10years to oblicatoric (sp? = you will get arrested if you try to keep your child out from these schools so they have to attend). Then there is the voluntary choices either a commom academic 3year school called "School for the advanced" witch leads to Examen Artium witch is the required exam to start at a university (i remind that these are direct norwegian translation so might sound silly) Or servral different job based schools like chef, eletrician, plumber and so on. When this schools are done most people are around 18 19years old. Then you have the choice to start at the university or "highschool" (norwegian translation, this does not equal to the american highschool). Here you take a higher academic education in what ever field! Bachelor, Master, PhD and so on... in addition many young people take a year at (yet anoher norwegian translation) "Folk highschool" here there are subjects on art, music and lots of stuff. But it just a one year study, and most people do it for the social life

lots and lots of parties there.
So there you have it, norwegian educational system in a box....
now back to the numbers there, the norwegian equivalant of american highschool witch is the "school for the advanced" id say about 50% attends, and 49% attends the jobdirected educations... so the school attendence among 16 - 19years olds are atleast on 90% minimum! (witch is about the same ages as highschool no?)
i have no idea on how many that goes to universities, but on the 3rd largest university in norway where i go there is about 35 000 students... in country with 4,5million innhabbitants and a city with 120 000 innhabbitants... so i would say the percentage of people attending university is pretty high too! I can backup this that from my understanding its not cheap to go to a college or university in america, in norway we pay 400NOK for administrational expences ( that equals about 55$ every half year ) so its pretty cheap! I belive that this is the situation in both norway, sweden, denmark and iceland!
hope that clears things up a bit about the numbers and different educational systems

the rest seems pretty accurate, norwegian teacher have a lousy pay >_<