I bet that in 5 years from now (even faster) Bitcoin or other cryptocurrency will join too.
Bitcoin or other cryptocurrency will join too, but it will take decades. It took 35 years for Chinese Yuan to join the club.
Bitcoin is attracting users from across the globe, to be used as a internet currency. You can't say the same about any other fiat.
We have to reimagine our vision about money. First time in history we have something that scale trust and we can send it across the internet. Its much more than money