| Frequency | Number of dividends |
| Annually | 0 |
| Semi-annually | 0 |
| Quarterly | 135 |
| Monthly | 0 |
| Irregularly | 0 |
| 'none' | 0 |
Dividend payment timing:
| Month | Number of dividends |
| January | 0 |
| February | 13 |
| March | 21 |
| April | 0 |
| May | 13 |
| June | 20 |
| July | 0 |
| August | 15 |
| September | 19 |
| October | 0 |
| November | 13 |
| December | 21 |
| Status | Number |
| Cancelled | 0 |
| Discontinued | 0 |
| Omitted | 0 |
| Year | Dividends paid | Increase from previous year | CAGR to 2012 from | Bumpiness to 2012 from |
| 1979 | $ 0.00981 | 13.807% | 21 | |
| 1980 | $ 0.01350 | 37.684% | 13.131% | 20 |
| 1981 | $ 0.01490 | 10.315% | 13.223% | 21 |
| 1982 | $ 0.01583 | 6.250% | 13.463% | 21 |
| 1983 | $ 0.01662 | 5.010% | 13.767% | 21 |
| 1984 | $ 0.01745 | 5.000% | 14.093% | 22 |
| 1985 | $ 0.01833 | 5.008% | 14.444% | 22 |
| 1986 | $ 0.01994 | 8.791% | 14.667% | 22 |
| 1987 | $ 0.02165 | 8.577% | 14.918% | 23 |
| 1988 | $ 0.02273 | 4.994% | 15.351% | 23 |
| 1989 | $ 0.02386 | 4.994% | 15.824% | 23 |
| 1990 | $ 0.03759 | 57.516% | 14.217% | 22 |
| 1991 | $ 0.03947 | 4.999% | 14.675% | 23 |
| 1992 | $ 0.04144 | 4.997% | 15.182% | 23 |
| 1993 | $ 0.04351 | 4.998% | 15.745% | 24 |
| 1994 | $ 0.04569 | 5.006% | 16.372% | 24 |
| 1995 | $ 0.09061 | 98.328% | 12.779% | 14 |
| 1996 | $ 0.15111 | 66.765% | 10.056% | 6 |
| 1997 | $ 0.15866 | 4.999% | 10.401% | 6 |
| 1998 | $ 0.16660 | 5.001% | 10.798% | 6 |
| 1999 | $ 0.17493 | 5.000% | 11.257% | 6 |
| 2000 | $ 0.18367 | 4.999% | 11.795% | 5 |
| 2001 | $ 0.19286 | 5.001% | 12.434% | 5 |
| 2002 | $ 0.22000 | 14.074% | 12.271% | 5 |
| 2003 | $ 0.24000 | 9.091% | 12.630% | 6 |
| 2004 | $ 0.30000 | 25.000% | 11.172% | 4 |
| 2005 | $ 0.34000 | 13.333% | 10.867% | 4 |
| 2006 | $ 0.40000 | 17.647% | 9.776% | 3 |
| 2007 | $ 0.46000 | 15.000% | 8.760% | 2 |
| 2008 | $ 0.52000 | 13.043% | 7.714% | 1 |
| 2009 | $ 0.56000 | 7.692% | 7.722% | 1 |
| 2010 | $ 0.60000 | 7.143% | 8.012% | 1 |
| 2011 | $ 0.65500 | 9.167% | 6.870% | 0 |
| 2012 | $ 0.70000 | 6.870% |
| Yield | Price |
| 0.5% | $140.00 |
| 1.0% | $ 70.00 |
| 1.5% | $ 46.67 |
| 2.0% | $ 35.00 |
| 2.5% | $ 28.00 |
| 3.0% | $ 23.33 |
| 3.5% | $ 20.00 |
| 4.0% | $ 17.50 |
| 4.5% | $ 15.56 |
| 5.0% | $ 14.00 |
| 5.5% | $ 12.73 |
| 6.0% | $ 11.67 |
| 6.5% | $ 10.77 |
| 7.0% | $ 10.00 |
| 7.5% | $ 9.33 |
| 8.0% | $ 8.75 |
| 8.5% | $ 8.24 |
| 9.0% | $ 7.78 |
| 9.5% | $ 7.37 |
| 10.0% | $ 7.00 |