Year	Percent
1950	9.19296
1955	8.88286
1960	8.88213
1965	8.66839
1970	9.87138
1975	9.79547
1980	9.79142
1985	9.88345
1990	8.58451
1995	9.25497
2000	10.3851
2005	9.53521
2010	9.00735
2015	9.10725
2020	9.58799
2025	10.37315
2030	10.4371
2035	10.37359
2040	10.34225
2045	10.05689
2050	9.63941
2055	9.2367
2060	8.88453
2065	8.52453
2070	8.17695
2075	7.83792
2080	7.5018
2085	7.19477
2090	6.89907
2095	6.64379
2100	6.40975