Year	Percent
1950	9.85337
1955	9.37217
1960	9.56354
1965	9.50806
1970	9.87387
1975	9.86207
1980	10.11268
1985	10.68507
1990	11.97023
1995	9.49897
2000	8.69222
2005	8.23544
2010	8.46053
2015	7.71291
2020	7.07437
2025	6.61792
2030	6.71363
2035	6.50961
2040	6.29691
2045	6.10869
2050	5.91873
2055	5.73019
2060	5.59482
2065	5.51472
2070	5.44867
2075	5.37336
2080	5.27924
2085	5.19212
2090	5.12656
2095	5.0779
2100	5.03997