41. Potential growth is oftenmeasured by penetration rate . 42. The Internet penetration rate in Africa as a whole was 16 users per 100 inhabitants in 2013. 43. CSA penetration rates vary significantly across Europe but are highest in the UK, recently reaching 70 %. 44. The local penetration rate stands at 57 percent, up from the mid-1980s total of about 40 percent. 45. The penetration rate is still relatively low, 46. Hong Kong is the second after South Korea in terms of broadband penetration rate ( 53 % ). 47. Indonesia is an extremely attractive wireless market with a sizable population and a relatively low mobile penetration rate . 48. Penetration rates in this country are around 55 percent, and much lower than that outside the United States.49. That's a much faster penetration rate than the wired system-- called a broadband network-- being laid by PacTel. 50. But by the end of this year the penetration rate in Japan should have increased to 29 percent.