Percent change in unit labor costs at an annual rate, nonfarm business, seasonally adjusted, 1999 I-2001 I % change at Year and quarter an annual rate 1999 I 1.8 1999 II 4.3 1999 III 0.2 1999 IV -3.5 2000 I 1.9 2000 II -0.2 2000 III 3.2 2000 IV 4.5 2001 I 5.2