| 1 | A | B | C | D | E | F | G | H | I | J | K | L | M |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 2 | source of earnings, t1ff and the t4 file, 2000 to 2011 |  |  |  |  |  |  |  |  |  |  |  |  |
| 3 |  | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 |
| 4 |  | % |  |  |  |  |  |  |  |  |  |  |  |
| 5 | both sources - earnings | 72.7 | 72.2 | 71.9 | 71.6 | 71.0 | 71.3 | 71.0 | 70.9 | 70.5 | 69.7 | 69.7 | 70.1 |
| 6 | single source - earnings | 3.1 | 3.2 | 3.1 | 3.3 | 3.5 | 3.2 | 3.6 | 3.6 | 3.5 | 2.9 | 2.3 | 1.3 |
| 7 | single source - no earnings | 24.2 | 24.6 | 25.0 | 25.2 | 25.4 | 25.5 | 25.4 | 25.5 | 26.0 | 27.4 | 28.1 | 28.6 |
| 8 | single source - no earnings | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.1 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 | 0.0 |

Question: what is the percentage of all cases each year, on average - present a similar earnings situation in both the t1 family file (t1ff) and the employer file (t4) ?
Answer: 96.95

Question: what is the percentage of cases on average in each year show earnings in one file without showing earnings in the other?
Answer: 3.05

Question: what is the percentage on average of cases in each year show earnings in both the t1ff and t4?
Answer: 71.05

Question: what percentage of respondents on average in each year had $0 earnings in the t1ff and no t4 information?
Answer: 25.908333