Jan |
Feb |
Mar |
Apr |
May |
Jun |
Jul |
Aug |
Sep |
Oct |
Nov |
Dec |
Ann. Ave. |
|
| 1981 | n/a |
n/a |
n/a |
n/a |
n/a |
n/a |
n/a |
n/a |
339.08 |
339.25 |
339.62 |
339.96 |
n/a |
| 1982 | 340.22 |
340.47 |
340.54 |
340.38 |
340.32 |
340.48 |
340.65 |
340.67 |
340.59 |
340.62 |
340.86 |
341.12 |
340.58 |
| 1983 | 341.33 |
341.59 |
341.7 |
341.6 |
341.63 |
341.92 |
342.21 |
342.36 |
342.4 |
342.54 |
342.88 |
343.18 |
342.11 |
| 1984 | 343.4 |
343.62 |
343.65 |
343.44 |
343.36 |
343.56 |
343.79 |
343.9 |
343.93 |
344.06 |
344.42 |
344.75 |
343.82 |
| 1985 | 345 |
345.26 |
345.33 |
345.14 |
345.08 |
345.32 |
345.58 |
345.7 |
345.71 |
345.82 |
346.15 |
346.45 |
345.55 |
| 1986 | 346.65 |
346.86 |
346.87 |
346.6 |
346.46 |
346.61 |
346.78 |
346.79 |
346.69 |
346.72 |
346.99 |
347.25 |
346.77 |
| 1987 | 347.44 |
347.65 |
347.68 |
347.45 |
347.37 |
347.63 |
347.93 |
348.1 |
348.16 |
348.35 |
348.78 |
349.18 |
347.98 |
| 1988 | 349.48 |
349.77 |
349.85 |
349.65 |
349.59 |
349.86 |
350.14 |
350.27 |
350.29 |
350.44 |
350.84 |
351.2 |
350.12 |
| 1989 | 351.46 |
351.7 |
351.72 |
351.41 |
351.24 |
351.39 |
351.56 |
351.57 |
351.47 |
351.52 |
351.86 |
352.19 |
351.59 |
| 1990 | 352.44 |
352.73 |
352.81 |
352.58 |
352.52 |
352.79 |
353.08 |
353.19 |
353.16 |
353.26 |
353.65 |
354 |
353.02 |
| 1991 | 354.24 |
354.48 |
354.47 |
354.13 |
353.94 |
354.09 |
354.26 |
354.25 |
354.11 |
354.13 |
354.45 |
354.75 |
354.28 |
| 1992 | 354.96 |
355.21 |
355.23 |
354.94 |
354.83 |
355.08 |
355.32 |
355.35 |
355.22 |
355.22 |
355.51 |
355.77 |
355.22 |
| 1993 | 355.92 |
356.1 |
356.07 |
355.71 |
355.54 |
355.78 |
356.06 |
356.15 |
356.11 |
356.22 |
356.64 |
357.03 |
356.11 |
| 1994 | 357.31 |
357.6 |
357.63 |
357.32 |
357.19 |
357.45 |
357.73 |
357.83 |
357.79 |
357.91 |
358.36 |
358.78 |
357.74 |
| 1995 | 359.08 |
359.41 |
359.48 |
359.2 |
359.1 |
359.4 |
359.73 |
359.85 |
359.81 |
359.94 |
360.39 |
360.8 |
359.68 |
| 1996 | 361.08 |
361.37 |
361.36 |
360.97 |
360.79 |
361.01 |
361.24 |
361.26 |
361.13 |
361.18 |
361.55 |
361.89 |
361.24 |
| 1997 | 362.09 |
362.32 |
362.29 |
361.87 |
361.67 |
361.92 |
362.22 |
362.32 |
362.29 |
362.43 |
362.93 |
363.4 |
362.31 |
| 1998 | 363.76 |
364.15 |
364.27 |
364.03 |
364.02 |
364.45 |
364.91 |
365.13 |
365.17 |
365.36 |
365.88 |
366.35 |
364.79 |
| 1999 | 366.66 |
366.99 |
367.03 |
366.65 |
366.49 |
366.76 |
367.05 |
367.1 |
366.96 |
367.01 |
367.41 |
367.78 |
366.99 |
| 2000 | 368.01 |
368.27 |
368.22 |
367.76 |
367.55 |
367.83 |
368.14 |
368.24 |
368.18 |
368.31 |
368.8 |
369.26 |
368.21 |
| 2001 | 369.57 |
369.9 |
369.91 |
369.5 |
369.3 |
369.59 |
369.91 |
369.99 |
369.89 |
369.98 |
370.47 |
370.92 |
369.91 |
| 2002 | 371.25 |
371.61 |
371.67 |
371.3 |
371.18 |
371.55 |
371.96 |
372.14 |
372.13 |
372.31 |
372.87 |
373.38 |
371.95 |
| 2003 | 373.74 |
374.11 |
374.16 |
373.76 |
373.59 |
373.9 |
374.25 |
374.33 |
374.23 |
374.32 |
374.81 |
375.27 |
374.21 |
| 2004 | 375.58 |
375.91 |
375.91 |
375.45 |
375.25 |
375.56 |
375.9 |
375.99 |
375.89 |
376.01 |
376.55 |
377.06 |
375.92 |
| 2005 | 377.42 |
377.81 |
377.87 |
377.47 |
377.3 |
377.67 |
378.06 |
378.2 |
378.13 |
378.28 |
378.83 |
379.34 |
378.03 |
| 2006 | 379.67 |
380.02 |
380.01 |
379.5 |
379.24 |
379.52 |
379.84 |
379.91 |
379.8 |
379.93 |
380.51 |
381.06 |
379.92 |
| 2007 | 381.46 |
381.9 |
381.98 |
381.56 |
381.39 |
381.75 |
382.13 |
382.23 |
382.11 |
382.2 |
382.71 |
383.18 |
382.05 |