Year
|
GW nitrate 1992-2017 (552)
|
GW nitrate 2000-2017 (1044)
|
Rivers nitrate 1992-2017 (846)
|
Rivers nitrate 2000-2017 (1213)
|
Rivers phosphate 1992-2017 (799)
|
Rivers phosphate 2000-2017 (1163)
|
Lakes phosphorus 1992-2017 (284)
|
Lakes phosphorus 2000-2017 (344)
|
1992
|
18.0
|
|
2.25
|
|
0.113
|
|
0.033
|
|
1993
|
17.9
|
|
2.17
|
|
0.115
|
|
0.033
|
|
1994
|
18.1
|
|
2.12
|
|
0.096
|
|
0.032
|
|
1995
|
18.8
|
|
2.07
|
|
0.094
|
|
0.031
|
|
1996
|
18.2
|
|
2.1
|
|
0.102
|
|
0.028
|
|
1997
|
19.1
|
|
2.1
|
|
0.094
|
|
0.029
|
|
1998
|
18.8
|
|
2.2
|
|
0.086
|
|
0.027
|
|
1999
|
19.1
|
|
2.03
|
|
0.081
|
|
0.028
|
|
2000
|
18.9
|
19.4
|
2.03
|
1.88
|
0.078
|
0.092
|
0.027
|
0.03
|
2001
|
18.9
|
19.5
|
1.99
|
1.86
|
0.075
|
0.087
|
0.026
|
0.029
|
2002
|
18.5
|
19.0
|
1.94
|
1.83
|
0.077
|
0.089
|
0.03
|
0.032
|
2003
|
19.0
|
19.4
|
1.85
|
1.76
|
0.074
|
0.088
|
0.028
|
0.03
|
2004
|
18.9
|
19.2
|
2.06
|
1.92
|
0.074
|
0.083
|
0.025
|
0.028
|
2005
|
19.1
|
19.6
|
1.92
|
1.83
|
0.069
|
0.076
|
0.027
|
0.029
|
2006
|
18.8
|
19.5
|
2.03
|
1.91
|
0.076
|
0.081
|
0.025
|
0.028
|
2007
|
19.3
|
19.5
|
1.97
|
1.85
|
0.079
|
0.087
|
0.022
|
0.027
|
2008
|
19.1
|
19.5
|
1.9
|
1.78
|
0.062
|
0.073
|
0.025
|
0.029
|
2009
|
19.2
|
19.2
|
1.8
|
1.69
|
0.062
|
0.072
|
0.027
|
0.03
|
2010
|
19.1
|
19.6
|
1.85
|
1.74
|
0.061
|
0.068
|
0.024
|
0.027
|
2011
|
18.7
|
19.1
|
1.73
|
1.62
|
0.052
|
0.058
|
0.022
|
0.025
|
2012
|
18.6
|
19.0
|
1.73
|
1.63
|
0.063
|
0.071
|
0.024
|
0.026
|
2013
|
19.0
|
19.5
|
1.89
|
1.76
|
0.06
|
0.071
|
0.023
|
0.025
|
2014
|
19.2
|
19.4
|
1.77
|
1.65
|
0.056
|
0.073
|
0.022
|
0.025
|
2015
|
19.2
|
19.5
|
1.74
|
1.62
|
0.052
|
0.065
|
0.02
|
0.023
|
2016
|
18.9
|
19.4
|
1.9
|
1.75
|
0.053
|
0.067
|
0.02
|
0.022
|
2017
|
18.3
|
18.8
|
1.87
|
1.72
|
0.056
|
0.07
|
0.02
|
0.023
|