| Year | MALC/GDP of America (%) | MALC/(H1H2 + L1H2) of America (%) |
| 1998 | 10.1 | 26.5 |
| 1999 | 9.9 | 26.5 |
| 2000 | 10.2 | 27.5 |
| 2001 | 9.5 | 26.6 |
| 2002 | 8.7 | 25.0 |
| 2003 | 8.5 | 24.5 |
| 2004 | 8.7 | 24.8 |
| 2005 | 9.3 | 26.5 |
| 2006 | 9.8 | 27.9 |
| 2007 | 9.9 | 28.6 |
| 2008 | 9.4 | 27.9 |
| 2009 | 7.9 | 24.8 |
| 2010 | 8.3 | 25.8 |
| 2011 | 8.5 | 26.0 |