| 1 | A | B | C | D |
| --- | --- | --- | --- | --- |
| 2 | number of newborns from vital statistics and the t1 family file |  |  |  |
| 3 | calendar year | vital statistics | t1ff estimates | t1ff / vital statistics ratio |
| 4 |  | number |  | ratio |
| 5 | 1991 | 402,533 | 412,577 | 1.02 |
| 6 | 1992 | 398,643 | 402,927 | 1.01 |
| 7 | 1993 | 388,394 | 367,551 | 0.95 |
| 8 | 1994 | 385,114 | 362,704 | 0.94 |
| 9 | 1995 | 378,016 | 354,549 | 0.94 |
| 10 | 1996 | 366,200 | 342,593 | 0.94 |
| 11 | 1997 | 348,598 | 323,335 | 0.93 |
| 12 | 1998 | 342,418 | 312,984 | 0.91 |
| 13 | 1999 | 337,249 | 304,402 | 0.90 |
| 14 | 2000 | 327,882 | 297,422 | 0.91 |
| 15 | 2001 | 333,744 | 298,312 | 0.89 |
| 16 | 2002 | 328,802 | 291,549 | 0.89 |
| 17 | 2003 | 335,202 | 292,372 | 0.87 |
| 18 | 2004 | 337,072 | 306,977 | 0.91 |
| 19 | 2005 | 342,176 | 330,495 | 0.97 |
| 20 | 2006 | 354,617 | 347,806 | 0.98 |
| 21 | 2007 | 367,864 | 356,754 | 0.97 |
| 22 | 2008 | 377,886 | 364,743 | 0.97 |
| 23 | 2009 | 380,863 | 367,030 | 0.96 |
| 24 | 2010 | 377,213 | 366,916 | 0.97 |
| 25 | 2011 | 377,636 | 368,168 | 0.97 |
| 26 | 2012 | 381,869 | 373,841 | 0.98 |
| 27 | 2013 | 380,323 | 372,333 | 0.98 |

Question: what is the percentage that the number of newborns in the t1ff more than that in the vital statistics in 1991?
Answer: 0.02

Question: what is the percentage that the number of newborns in the t1ff more than that in the vital statistics in 1992?
Answer: 0.01