Month Average 1990 = 100 1975-01-31 517.97 1975-02-28 505.42 1975-03-31 511.03 1975-04-30 512.11 1975-05-31 511.47 1975-06-30 513.07 1975-07-31 497.94 1975-08-31 498.49 1975-09-30 493.23 1975-10-31 474.45 1975-11-30 470.52 1975-12-31 474.81 1976-01-31 484.36 1976-02-29 486.85 1976-03-31 487.16 1976-04-30 493.3 1976-05-31 484.75 1976-06-30 487.14 1976-07-31 482.8 1976-08-31 481.36 1976-09-30 476.96 1976-10-31 479.93 1976-11-30 473.77 1976-12-31 470.88 1977-01-31 471.33 1977-02-28 471.58 1977-03-31 470.18 1977-04-30 468.21 1977-05-31 471.46 1977-06-30 469.61 1977-07-31 473.75 1977-08-31 474.91 1977-09-30 473 1977-10-31 485.02 1977-11-30 468.34 1977-12-31 461.22 1978-01-31 453.64 1978-02-28 440.47 1978-03-31 425.97 1978-04-30 429.09 1978-05-31 432.45 1978-06-30 431.83 1978-07-31 425.26 1978-08-31 415.74 1978-09-30 411.78 1978-10-31 397.71 1978-11-30 414.18 1978-12-31 407.03 1979-01-31 409.6 1979-02-28 407.05 1979-03-31 407.55 1979-04-30 410.09 1979-05-31 408.3 1979-06-30 401.9 1979-07-31 389.4 1979-08-31 397.83 1979-09-30 388.11 1979-10-31 394.36 1979-11-30 382.27 1979-12-31 370.12 1980-01-31 368.24 1980-02-29 367.53 1980-03-31 372.42 1980-04-30 345.28 1980-05-31 331.84 1980-06-30 333.53 1980-07-31 332.67 1980-08-31 338.67 1980-09-30 337.01 1980-10-31 345.58 1980-11-30 333.04 1980-12-31 334.82 1981-01-31 333.9 1981-02-28 326.97 1981-03-31 328.24 1981-04-30 325.1 1981-05-31 322.94 1981-06-30 322.5 1981-07-31 321.97 1981-08-31 321.3 1981-09-30 331.15 1981-10-31 326.29 1981-11-30 322.83 1981-12-31 321.2 1982-01-31 318.12 1982-02-28 317.56 1982-03-31 318.94 1982-04-30 310.1 1982-05-31 303.56 1982-06-30 295.69 1982-07-31 298.23 1982-08-31 296.65 1982-09-30 296.23 1982-10-31 299.61 1982-11-30 299.19 1982-12-31 291.05 1983-01-31 250.67 1983-02-28 250.45 1983-03-31 253.8 1983-04-30 255.06 1983-05-31 258.34 1983-06-30 260.36 1983-07-31 267.58 1983-08-31 249.76 1983-09-30 246.44 1983-10-31 242.45 1983-11-30 238.52 1983-12-31 237.94 1984-01-31 234.15 1984-02-29 219.93 1984-03-31 219.88 1984-04-30 228.42 1984-05-31 229.74 1984-06-30 233.77 1984-07-31 241.89 1984-08-31 241.77 1984-09-30 211.08 1984-10-31 210.51 1984-11-30 210.26 1984-12-31 210.75 1985-01-31 210.68 1985-02-28 206.64 1985-03-31 199.87 1985-04-30 196.29 1985-05-31 193.88 1985-06-30 192.14 1985-07-31 189.51 1985-08-31 186.69 1985-09-30 180.64 1985-10-31 150.67 1985-11-30 150.43 1985-12-31 149.24 1986-01-31 148.43 1986-02-28 147.77 1986-03-31 144.47 1986-04-30 144.83 1986-05-31 146.7 1986-06-30 143.28 1986-07-31 143.23 1986-08-31 141.14 1986-09-30 142.77 1986-10-31 138.39 1986-11-30 135.42 1986-12-31 131.36 1987-01-31 132.61 1987-02-28 130.98 1987-03-31 130.58 1987-04-30 129.88 1987-05-31 128.71 1987-06-30 127.67 1987-07-31 127.11 1987-08-31 125.66 1987-09-30 125.05 1987-10-31 123.48 1987-11-30 122.95 1987-12-31 120.53 1988-01-31 121.69 1988-02-29 120.58 1988-03-31 119.59 1988-04-30 119.89 1988-05-31 120.16 1988-06-30 119.44 1988-07-31 118.65 1988-08-31 118.07 1988-09-30 117.72 1988-10-31 116.31 1988-11-30 114.81 1988-12-31 114.58 1989-01-31 113.62 1989-02-28 112.97 1989-03-31 111.79 1989-04-30 111.3 1989-05-31 110.69 1989-06-30 109.67 1989-07-31 109.67 1989-08-31 109.78 1989-09-30 108.8 1989-10-31 107.85 1989-11-30 105.83 1989-12-31 106.59 1990-01-31 104.55 1990-02-28 103.54 1990-03-31 101.75 1990-04-30 100.28 1990-05-31 99.52 1990-06-30 99.73 1990-07-31 99.45 1990-08-31 98.9 1990-09-30 99.55 1990-10-31 96.37 1990-11-30 95.94 1990-12-31 94.79 1991-01-31 92.78 1991-02-28 91.58 1991-03-31 89.65 1991-04-30 89.07 1991-05-31 88.38 1991-06-30 88.08 1991-07-31 88.18 1991-08-31 87.63 1991-09-30 87.6 1991-10-31 86.95 1991-11-30 86.2 1991-12-31 85.63 1992-01-31 84.33 1992-02-29 84.76 1992-03-31 84.62 1992-04-30 83.39 1992-05-31 81.76 1992-06-30 81.03 1992-07-31 80.74 1992-08-31 80.52 1992-09-30 80.85 1992-10-31 79.27 1992-11-30 79.17 1992-12-31 78.19 1993-01-31 78.26 1993-02-28 77.95 1993-03-31 77.55 1993-04-30 76.86 1993-05-31 76.62 1993-06-30 75.39 1993-07-31 75.09 1993-08-31 74.23 1993-09-30 73.16 1993-10-31 73.64 1993-11-30 73.18 1993-12-31 72.69 1994-01-31 72 1994-02-28 71.92 1994-03-31 70.53 1994-04-30 70.43 1994-05-31 70.62 1994-06-30 69.84 1994-07-31 69.99 1994-08-31 69.71 1994-09-30 69.49 1994-10-31 69.06 1994-11-30 68.96 1994-12-31 68.91 1995-01-31 69.04 1995-02-28 69.17 1995-03-31 69.18 1995-04-30 68.68 1995-05-31 68.18 1995-06-30 68.56 1995-07-31 68.34 1995-08-31 67.9 1995-09-30 67.68 1995-10-31 67.21 1995-11-30 66.63 1995-12-31 66.44 1996-01-31 65.88 1996-02-29 66.21 1996-03-31 66.54 1996-04-30 67.09 1996-05-31 67.44 1996-06-30 67.37 1996-07-31 67.63 1996-08-31 67.3 1996-09-30 67.29 1996-10-31 67.67 1996-11-30 67.06 1996-12-31 66.29 1997-01-31 66.66 1997-02-28 66.63 1997-03-31 66.2 1997-04-30 65.47 1997-05-31 65 1997-06-30 65.23 1997-07-31 65.24 1997-08-31 65.17 1997-09-30 65.14 1997-10-31 65.2 1997-11-30 65.58 1997-12-31 65.17 1998-01-31 64.74 1998-02-28 64.78 1998-03-31 59.24 1998-04-30 58.84 1998-05-31 60.69 1998-06-30 61.26 1998-07-31 62.6 1998-08-31 60.56 1998-09-30 60.83 1998-10-31 61.36 1998-11-30 62.2 1998-12-31 61.98 1999-01-31 63.14 1999-02-28 62.76 1999-03-31 61.57 1999-04-30 61.53 1999-05-31 61.53 1999-06-30 61.47 1999-07-31 61.54 1999-08-31 61.08 1999-09-30 60.54 1999-10-31 60.06 1999-11-30 59.88 1999-12-31 59.48 2000-01-31 59 2000-02-29 58.66 2000-03-31 58.15 2000-04-30 57.53 2000-05-31 57.89 2000-06-30 58.14 2000-07-31 57.83 2000-08-31 57.34 2000-09-30 56.94 2000-10-31 56.53 2000-11-30 56.87 2000-12-31 57.55 2001-01-31 57.61 2001-02-28 57.62 2001-03-31 57.41 2001-04-30 57.39 2001-05-31 56.77 2001-06-30 56.97 2001-07-31 57.27 2001-08-31 57.52 2001-09-30 57.48 2001-10-31 57.46 2001-11-30 57.5 2001-12-31 57.5