Year	Percent
1950	8.24012
1955	9.3748
1960	11.27976
1965	12.69213
1970	12.72847
1975	10.43028
1980	10.20383
1985	9.90877
1990	9.94259
1995	10.30606
2000	8.87716
2005	6.98693
2010	6.85454
2015	8.6064
2020	9.96932
2025	8.69336
2030	7.60797
2035	6.91697
2040	6.7791
2045	6.95537
2050	7.09344
2055	6.94556
2060	6.53147
2065	6.09612
2070	5.86397
2075	5.82454
2080	5.8401
2085	5.77771
2090	5.60656
2095	5.38962
2100	5.21801