20000
40000
60000
80000
100000
120000
140000
160000
180000
200000
220000
166093
1990
49884
166743
1991
49968
167165
1992
50044
168344
1993
52838
166964
1994
55358
166037
1995
50488
163182
1996
49976
158121
1997
48101
157952
1998
47827
148236
1999
46407
143372
2000
45828
139577
2001
45058
135528
2002
45381
131376
2003
44039
128737
2004
43732
128140
2005
43565
121100
2006
45089
118630
2007
44921
119086
2008
46960
118190
2009
47484
118197
2010
49812
117576
2011
50035
115922
2012
50123
