Year	Percent
1950	8.90331
1955	8.4419
1960	8.08821
1965	8.17919
1970	8.24797
1975	8.5812
1980	8.66614
1985	8.06109
1990	8.779
1995	8.95774
2000	8.07143
2005	8.15687
2010	8.34847
2015	7.93244
2020	7.49005
2025	7.18687
2030	6.91162
2035	6.72762
2040	6.54673
2045	6.34023
2050	6.10497
2055	5.89115
2060	5.73046
2065	5.61265
2070	5.51191
2075	5.42033
2080	5.33558
2085	5.2614
2090	5.20197
2095	5.16432
2100	5.13062