ðɪ ɪnˈɪʃəl ɹᵻsˈɜːtʃ ɡɹˈuːp fɚðə səsˈaɪəɾi bɪɡˈæn wɪð sˈɛvəntˌiːn mˈɛmbɚz ɪn mˈeɪ nˈaɪntiːnhˈʌndɹɪd nˈaɪnti wˈʌn, ænd ɡɹˈuː tʊ ɪŋklˈuːd fˈaɪvhˈʌndɹɪd mˈɛmbɚz ɡlˈoʊbəli æz ʌv ɑːktˈoʊbɚ tˈuː θˈaʊzənd twˈɛnti.
The initial research group for the society began with 17 members in May 1991, and grew to include 500 members globally as of October 2020.