My collection is quite patchy. I only bought the ones I like, not to collect them all.
2001
Onua, Lewa, Gali, Kopaka
Onewa, Whenua, Matua, Nokama, Nuju
2002
All six Bohroks
Cahdok & Gahdok
2003
Panrahk, Guurahk, Vorahk
Makuta, Jaller & Gukko, Takua & Pewku, Takanuva
2004
Matau Metru
Dume & Nivawk, Nidhiki, Krekka, Lhikan & Kikanalo
2005
Nuju Hordika
Oohnorak, Keelerak
Keetongu
2006
Vezok, Zaktan
Hewkii, Kongu
Vezon & Fenrakk
2007
All Barraki except Carapar
Nuparu, Matoro
Maxilos & Spinax, Nocturn
2008
All Matoran except poor Solek
All Phantoka except Kopaka
All Mistika Makuta, Onua
Vultraz, Takanuva, Jetrax T6, Mutran & Vican
2009
Atakus, Zesk
Skrall, Vorox
Stronius, Vastus, Mata Nui
Fero & Skirmix, Tuma, Baranus V7, Skopio XV-1
2010
All six BIONICLE Stars
2015
Protector of Earth
Onua, Kopaka, Lewa, Lord of Skull Spiders
BONUS: Wishlist
Matoro Inika, Gadunka, Icarax, Toa Ignika, Toa Mata Nui Titan
Protector of Stone, and All 2015 summer wave!