| Year | Canada | U.S. | |
|---|---|---|---|
| Source: Statistics Canada and U.S. Department of Commerce | |||
| 1997 | 138.3 | 145.7 | |
| 1998 | 134.4 | 130.3 | |
| 1999 | 149.7 | 134.8 | |
| 2000 | 135.8 | 144.1 | |
| 2001 | 119.7 | 152.7 | |
| 2002 | 118.1 | 137.8 | |
| 2003 | 123.9 | 137 | |
| 2004 | 115.9 | 130.6 | |
| 2005 | 109 | 125.5 | |
| 2006 | 110 | 121.4 | |
| 2007 | 113.8 | 101 | |