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Table 2 Overall Mortality Rates across all cities by year

From: Particulate air pollution and survival in a COPD cohort

Year Mortality rates
1986 0.20
1987 0.18
1988 0.16
1989 0.15
1990 0.14
1991 0.13
1992 0.13
1993 0.12
1994 0.12
1995 0.13
1996 0.12
1997 0.12
1998 0.12
1999 0.12