The LEGO Universal Building Set theme, released between 1966 and 1977, includes 4 minifigs from 40 sets. These minifigs have an average annual growth rate of 4.0%.
4 minifigs
Minifig number old025
Legoland figure with a red torso, red legs, and a red hat
Value $12.09
Growth  +504.5%
Annual growth 3.6%
Minifig number old011
Legoland figure with a black torso, black legs, and black hat
Value $18.57
Growth  +828.5%
Annual growth 4.4%
Minifig number old007
Legoland figure with blue torso, legs, and hat
Value $18.57
Growth  +828.5%
Annual growth 4.4%
Minifig number old006
Legoland figure wearing a white hat, white torso, and white legs
Value $15.82
Growth  +691.0%
Annual growth 4.1%