| Frequency | Number of dividends |
| Annually | 0 |
| Semi-annually | 0 |
| Quarterly | 124 |
| Monthly | 0 |
| Irregularly | 0 |
| 'none' | 0 |
Dividend payment timing:
| Month | Number of dividends |
| January | 0 |
| February | 31 |
| March | 0 |
| April | 0 |
| May | 31 |
| June | 0 |
| July | 0 |
| August | 31 |
| September | 0 |
| October | 0 |
| November | 31 |
| December | 0 |
| Status | Number |
| Cancelled | 0 |
| Discontinued | 0 |
| Omitted | 0 |
| Year | Dividends paid | Increase from previous year | CAGR to 2012 from | Bumpiness to 2012 from |
| 1982 | $ 0.00469 | 18.536% | 9 | |
| 1983 | $ 0.00566 | 20.798% | 18.459% | 9 |
| 1984 | $ 0.00625 | 10.401% | 18.757% | 9 |
| 1985 | $ 0.00688 | 9.981% | 19.095% | 9 |
| 1986 | $ 0.00781 | 13.613% | 19.311% | 9 |
| 1987 | $ 0.00937 | 19.982% | 19.285% | 9 |
| 1988 | $ 0.01156 | 23.344% | 19.118% | 9 |
| 1989 | $ 0.01281 | 10.830% | 19.493% | 9 |
| 1990 | $ 0.01469 | 14.641% | 19.718% | 9 |
| 1991 | $ 0.01813 | 23.392% | 19.546% | 10 |
| 1992 | $ 0.02250 | 24.138% | 19.321% | 10 |
| 1993 | $ 0.03062 | 36.111% | 18.497% | 9 |
| 1994 | $ 0.03750 | 22.449% | 18.281% | 10 |
| 1995 | $ 0.04063 | 8.333% | 18.894% | 10 |
| 1996 | $ 0.04437 | 9.231% | 19.525% | 9 |
| 1997 | $ 0.05250 | 18.310% | 19.607% | 10 |
| 1998 | $ 0.06375 | 21.429% | 19.478% | 10 |
| 1999 | $ 0.08000 | 25.490% | 19.027% | 10 |
| 2000 | $ 0.10125 | 26.563% | 18.420% | 11 |
| 2001 | $ 0.12625 | 24.691% | 17.866% | 11 |
| 2002 | $ 0.14875 | 17.822% | 17.870% | 11 |
| 2003 | $ 0.20000 | 34.454% | 16.159% | 11 |
| 2004 | $ 0.27500 | 37.500% | 13.735% | 8 |
| 2005 | $ 0.34000 | 23.636% | 12.387% | 8 |
| 2006 | $ 0.42000 | 23.529% | 10.630% | 7 |
| 2007 | $ 0.51000 | 21.429% | 8.589% | 6 |
| 2008 | $ 0.60500 | 18.627% | 6.215% | 3 |
| 2009 | $ 0.62500 | 3.306% | 7.202% | 2 |
| 2010 | $ 0.66000 | 5.600% | 8.012% | 3 |
| 2011 | $ 0.73000 | 10.606% | 5.479% | 0 |
| 2012 | $ 0.77000 | 5.479% |
| Yield | Price |
| 0.5% | $154.00 |
| 1.0% | $ 77.00 |
| 1.5% | $ 51.33 |
| 2.0% | $ 38.50 |
| 2.5% | $ 30.80 |
| 3.0% | $ 25.67 |
| 3.5% | $ 22.00 |
| 4.0% | $ 19.25 |
| 4.5% | $ 17.11 |
| 5.0% | $ 15.40 |
| 5.5% | $ 14.00 |
| 6.0% | $ 12.83 |
| 6.5% | $ 11.85 |
| 7.0% | $ 11.00 |
| 7.5% | $ 10.27 |
| 8.0% | $ 9.62 |
| 8.5% | $ 9.06 |
| 9.0% | $ 8.56 |
| 9.5% | $ 8.11 |
| 10.0% | $ 7.70 |