U.S. system sales: $131.4 million

Growth in U.S. system sales: 4.5%

Total units: 31

Growth in units: 6.9%

ESPU: $4,380.3 million

U.S. system sales: $143.4 million

Growth in U.S. system sales: 1.1%

Total units: 78

Growth in units: -2.5%

ESPU: $1,851.9 million

U.S. system sales: $143.6 million

Growth in U.S. system sales: 6.1%

Total units: 117

Growth in units: 8.3%

ESPU: $1,436.6 million

U.S. system sales: $143.7 million

Growth in U.S. system sales: 16.5%

Total units: 97

Growth in units: 6.6%

ESPU: $1,505.0 million

U.S. system sales: $153.3 million

Growth in U.S. system sales: 39.4%

Total units: 144

Growth in units: 38.5%

ESPU: $1,153.0 million