World languages

I have been surprised by a list of "First-language speakers" in National Geographic of July 2012. The numbers must be very rough estimates.

Chinese (all forms)       1.213 mio
Spanish                            329 mio
English                             328 mio
Arabic (all forms)             221 mio
Hindi                                 182 mio
Bengali                             181 mio
Portuguese                       178 mio
Russian                            144 mio
Japanese                          122 mio 
German                              90 mio

Surprised ? Me too.

The following list should be more significant. It is an excerpt of
"The 30 Most Spoken Languages of the World" http://www.krysstal.com/spoken.html/.

1	Mandarin	Sino-Tibetan	Chinese Characters	1151	China, Malaysia, Taiwan
2	English	Indo-European	Latin	1000	USA, UK, Australia, Canada, New Zealand
3	Spanish	Indo-European	Latin	500	Mexico, Central and South America, Spain
4	Hindi	Indo-European	Devanagari	490	North and Central India
5	Russian	Indo-European	Cyrillic	277	Russia, Central Asia
6	Arabic	Afro-Asiatic	Arabic	255	Middle East, Arabia, North Africa
7	Portuguese	Indo-European	Latin	240	Brazil, Portugal, Southern Africa
8	Bengali	Indo-European	Bengali	215	Bangladesh, Eastern India
9	French	Indo-European	Latin	200	France, Canada, West Africa, Central Africa
10	Malay, Indonesian	Malayo-Polynesian	Latin	175	Indonesia, Malaysia, Singapore