Zero, I don't base worth of a Gen off how many it brought to the table. Gen 1 was decent with 150, Gen 2 was gash with 100, Gen 3 underwhelming with 130-odd, Gen 4 was great with 120-ish, Gen 5 bested Gen 1 for numbers but the Gen itself was underwhelming again, Gen 6 was pants with 70-ish new and 48 gimmick forms, Gen 7 was great with 78 additions, Gen 8 was decent with under a hundred new designs and 32 gimmick forms and Gen 9's great so far with potentially more wholly new things and likely more gimmick forms to add to the 120 added already (given the return of Mega Evolution).
