Year	Percent
1950	11.0869
1955	10.28801
1960	9.05343
1965	10.18018
1970	11.04185
1975	12.00856
1980	12.07132
1985	11.901
1990	8.87698
1995	9.57031
2000	10.56678
2005	11.69564
2010	10.63204
2015	10.55717
2020	8.59612
2025	10.08468
2030	10.00367
2035	9.81908
2040	9.40519
2045	8.82233
2050	8.38139
2055	8.36194
2060	8.52634
2065	8.46275
2070	8.1679
2075	7.77294
2080	7.44892
2085	7.30557
2090	7.28508
2095	7.23199
2100	7.03589