2003

6486.816

6586.316

5496.106

4951.797

7427.695

4032.510

短缺

2004

7666.572

8955.402

7445.662

6418.036

9627.054

6099.320

短缺

2005

8834.186

10,530.72

8983.029

7559.450

11,339.17

8188.720

适度

2006

10,402.96

12,629.16

10,596.61

8967.661

13,451.49

10,663.44

适度

2007

12,857.33

15,256.51

12,667.75

10,875.09

16,312.64

15,282.49

适度

2008

15,257.09

18,072.03

13,594.04

12,512.84

18,769.27

19,460.30

过剩

2009

16,525.48

16,051.28

13,629.28

12,321.61

18,482.42

23,991.52

过剩

2010

19,490.14

22,279.59

19,340.49

16,296.06

24,444.09

28,473.38

过剩

2011

22,959.18

27,820.37

24,998.02

20,207.35

30,311.03

31,811.48

过剩

2012

25,520.93

29,015.87

26,566.06

21,627.43

32,441.14

33,115.89

过剩

2013

27,934.30

31,115.53

31,065.10

24,030.65

36,045.97

38,213.15

过剩

2014

30,605.42

31,263.06

47,713.57

29,221.88

43,832.82

38,430.18

适度

2015

32,594.33

26,800.42

34,885.73

25,141.46

37,712.19

33,303.62

适度

2016

35,308.85

25,338.17

33,704.12

25,160.30

37,740.46

30,105.17

适度

2017

39,487.19

29,420.98

42,861.63

29,805.28

44,707.92

31,399.49

适度

2018

43,500.90

34,079.64

48,649.64

33,661.38

50,492.07

30,727.12

短缺

2019

46,947.72

33,143.81

46,021.09

33,630.03

50,445.05

31,079.24

短缺