Table 2. Usage Rates of NPs Used in the Written Data by Proficiency Level
| A2_0(n = 75) | B1_1(n = 61) | B1_2(n = 88) | B2_0(n = 76) | L1E(n = 200) |
| Bare Plural | 12%(36) | 10.6%(36) | 9.3%(44) | 17.1%(66) | 19.42%(88) |
| Indefinite Singular | 36.6%(108) | 40.6%(138) | 45.0%(213) | 58.2%(224) | 78.58%(356) |
| *Bare Singular | 46.3%(139) | 39.4%(134) | 39.1%(185) | 20.0%(77) | 0%(0) |
| Definite Singular | 5.7%(17) | 8.8%(30) | 6.6%(31) | 4.4%(17) | 1.76%(8) |
| Definite Plural | 0.0%(0) | 0.6%(2) | 0.0%(0) | 0.3%(1) | 0.2%(1) |
| Total | 100%(300) | 100%(340) | 100%(473) | 100%(385) | 100%(453) |