From: The potential cost of regulation of methane and nitrous oxide emissions in U.S. agriculture
Using the hyperbolic projection | Using the directional distance function projection | |||||
---|---|---|---|---|---|---|
Disposability | PAC | Disposability | PAC | |||
Strong | Weak | Strong | Weak | |||
Eq. (2) | Eq. (1) | Eq. (3) | Eq. (6) | Eq. (5) | Eq. (7) | |
1992 | 1.051 | 1.042 | 0.009 | 0.047 | 0.039 | 0.008 |
1993 | 1.067 | 1.057 | 0.010 | 0.061 | 0.052 | 0.009 |
1994 | 1.108 | 1.081 | 0.027 | 0.095 | 0.072 | 0.023 |
1995 | 1.173 | 1.136 | 0.037 | 0.147 | 0.117 | 0.030 |
1996 | 1.113 | 1.094 | 0.019 | 0.097 | 0.081 | 0.016 |
1997 | 1.117 | 1.096 | 0.021 | 0.101 | 0.084 | 0.018 |
1998 | 1.109 | 1.089 | 0.019 | 0.095 | 0.078 | 0.017 |
1999 | 1.123 | 1.105 | 0.018 | 0.106 | 0.091 | 0.015 |
2000 | 1.128 | 1.111 | 0.017 | 0.107 | 0.094 | 0.014 |
2001 | 1.109 | 1.089 | 0.019 | 0.095 | 0.078 | 0.017 |
2002 | 1.138 | 1.120 | 0.018 | 0.118 | 0.104 | 0.015 |
2003 | 1.109 | 1.089 | 0.019 | 0.095 | 0.078 | 0.017 |
Average | 1.115 | 1.095 | 0.020 | 0.099 | 0.083 | 0.016 |