10 Most Lucrative Languages

I just read an on-line article about the ten most lucrative languages to learn (here). The list is:

1. Chinese
2. Japanese
3. French
4. Arabic
5. Swahili
6. Spanish
7. German
8. Russian
9. American Sign Language
10. Italian

Do you see anything missing? How about Malay? Is learning Bahasa Melayu/Bahasa Indonesia really less valuable than Italian or American Sign Language?